FANUC Series 90-30 PLC. Installation and Hardware Manual (GFK-0356Q)

Additional Serial Ports (CPU351, CPU352, CPU363)

Although all Series 90-30 CPUs have a serial port that is accessed through the connector on the

power supply, the CPU351, CPU352, and CPU363 each have two additional serial ports. The

connectors for these additional serial ports are mounted on the front of each CPU. These two built-

in serial ports eliminate the need for the CPU to access serial ports across the PLC backplane,

resulting in better system performance. These two ports support the SNP/SNP-X master and slave

protocols (see “Breakfree SNP Protocol” on page 5-13.), RTU slave protocol (in Firmware Version

8.0 and later), and the Serial I/O feature (in Firmware Version 8.0 and later) that lets you create a

custom serial output. Instructions on how to use these ports can be found in the Series 90 PLC

Serial Communications User’s Manual, GFK-0582C or later.

Floating-Point Math

All Series 90-30 CPUs can work with integer numbers. (The set of integer numbers consists of all

positive and negative whole numbers, including zero.) The floating-point math feature enables a

CPU to work with decimal numbers in addition to integer numbers. It also provides trigonometric,

logarithmic, exponential, and radian conversion functions. Floating-point math is also referred to as

“real number” math. The CPU352 and CPU374 have always had hardware-based floating-point

math capabilities due to the built-in math co-processor chip. Starting with CPU firmware release

9.0, all of the other CPUs in the 350-364 CPU group were provided with firmware-based floating-

point math capability. Although there is a speed difference between the hardware-based floating-

point math of the CPU352 and CPU374 and the firmware-based type, this will not be significant to

many users. For applications where faster performance is important, the CPU352 and CPU374 are

the best choice. The floating-point math instructions are explained in the Series 90-30 PLC CPU

Instruction Set Reference Manual, GFK-0467K or later.

Flash Memory

All of the 350-374 CPUs have built-in Flash memory, which serves two purposes:

■ It provides non-volatile storage of the CPU firmware.

■ It gives you the option of storing program, configuration, and register data in non-volatile

Flash memory. Two ways of using this memory are: (1) to store an on-board backup copy of

user memory (although we still recommend that you keep a separate backup copy of your

complete program folder), and (2) for running in a battery-less scheme. For details, please see

Chapter 6.

Keyswitch

All 350 - 374 CPUs have a keyswitch; however, some versions of the CPU firmware do not

support all of the keyswitch features (see the section “Determining CPU Revision Levels” earlier in

this chapter). These differences are described in this section. Note that the keyswitches on some of

these CPUs are labeled ON/RUN and OFF/STOP and on others are just labeled ON and OFF.

Regardless of the labeling, all of these keyswitches work as described below:

■ Flash Memory Protection: This standard, hard-wired feature can be used to prevent Flash

memory from being changed by unauthorized people (people without a key). When the key

switch is in the ON position, Flash memory cannot be changed (written to). This keyswitch

feature will always be in effect, regardless of how the next two configurable features are set.

GFK-0356Q

Chapter 5 CPUs

5-15

■ Run/Stop (configurable): This feature was introduced in CPU firmware release 7.0. It is, by

default, disabled. It is not functional unless the R/S Switch: parameter on the CPU

configuration screen is set to Enabled. This feature, when enabled, lets you stop the PLC by

turning the key switch to OFF, or start the PLC running by turning the key switch to ON (if

there are no faults).

If the PLC has a non-fatal fault, turning the key switch from OFF to ON will cause the RUN

light on the power supply to flash for 5 seconds. If you again turn the key switch OFF, then

ON during the 5 seconds, the fault will clear and the PLC will go into run mode (and the RUN

light will stay ON).

If the PLC has a fatal fault, you will not be able to use the keyswitch to either clear the fault

or put the PLC into run mode. You will have to correct the cause of the fault before being able

to resume operation.

■ RAM Memory and Override Protection (configurable): This feature was introduced in

CPU firmware release 8.0. This feature is, by default, disabled. It is not functional unless the

Mem Protect: parameter on the CPU configuration screen is set to Enabled. If this feature is

enabled and the keyswitch is ON, (1) user RAM memory cannot be changed (2) discrete points

cannot be overridden, and (3) the TOD clock cannot be changed with the Hand Held

Programmer (however, the TOD clock can still be changed using programming software).

Protect your keys. Each new 350-374 CPU is supplied with a pair of keys for the key switch. If

you use one or more of the key switch protection features described above, we recommend you

carefully guard your keys. If they are lost, misplaced, or stolen, you may be locked out from

working on your PLC, and unauthorized persons may have access to it. Replacement keys can be

purchased under part number 44A736756-G01. This kit contains three sets of CPU keys. All 350-

374 CPUs use the same key.

Of course, you can choose to not use any of the keyswitch protection features, in which case you

can leave the keyswitch set to the OFF position, and leave the two configurable keyswitch features

set at their default (disabled) settings. Then, you will not need to use a key to access the PLC.

Sequential Event Recorder (SER) Instruction

This functional instruction (programmed in ladder logic) was introduced in CPU firmware release

9.0 and is available in all of the 350 - 374 CPUs that have this firmware. The purpose of the SER

is to provide a dynamic troubleshooting and debugging tool. In effect, it takes ”snapshots” of the

on/off status of groups of discrete points that you specify. You also specify how many of these

snapshots to take, when and how often they will be taken, and where in memory they will be

stored. The stored snapshots can be analyzed to see the time relationship of the bits sampled.

Please see the Series 90-30 PLC CPU Instruction Set Reference Manual, GFK-0467K or later for

details on using this instruction. Some feature highlights:

■ An SER function block collects up to 32 contiguous or non-contiguous bits per sample.

■ Each SER function block can capture up to 1024 samples.

■ If the SER is embedded in a periodic subroutine, sampling rate is determined by the periodic

subroutine execution rate.

■ Only the trigger sample is time stamped. The trigger sample can be time-stamped in BCD

(maximum resolution of 1 s) or POSIX format (maximum resolution of 10ms). The time

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Series 90-30 PLC Installation and Hardware Manual - August 2002

GFK-0356Q

stamp is only placed once at the trigger point. The SER does not support more than one time

stamp per recording.

■ The SER can be configured for pre-, mid-, or post-trigger modes.

Embedded Ethernet Interface (CPU364 and CPU374)

The CPU364 and CPU374 consist of a CPU and an Ethernet Interface combined in one module.

These modules offer Ethernet capabilities formerly available only with the separate

IC693CMM321 Ethernet module. The CPU364 and CPU374 offer several advantages compared

to using a separate CPU and Ethernet module:

■

It only occupies one slot in the PLC baseplate compared to the two slots required by separate

CPU and Ethernet modules.

■

The CPU374 has two 10/100 BASE-T/TX ports connected to an embedded network switch.

■

The IC693CMM321 Ethernet module requires an external transceiver. The CPU364 does not

require one since it has this functionality built-in. To use this internal transceiver, connect to

the 10BASE-T port. However, if you choose, you may use an external transceiver by

connecting to the CPU364’s AAUI port, which bypasses the internal transceiver (see

Appendix J for GE Fanuc transceiver information).

■

The CPU374 does not require an external transceiver for either of its 10/100 BASE T/TX

ports.

■

Because they both reside in the CPU module, the CPU and Ethernet Interface can

communicate without using the PLC backplane. This provides faster communications speed

compared to using separate CPU and Ethernet modules, which have to use the slower path

across the PLC backplane.

■

Beginning with Firmware Release 9.1, the Ethernet Global Data (EGD) and configurable

Name Resolution features were added to the CPU364. The CPU374 supports EGD, but not

Name Resolution. These features are not supported by the IC693CMM321 Ethernet module.

Logicmaster software does not support these features. They are supported only in Control,

Version 2.2 or later, all versions of VersaPro software, and CIMPLICITY Machine Edition

software Logic Developer-PLC. For details about these features, please see publication GFK-

1541A or later, TCP/IP Ethernet Communications for the Series 90 PLC User’s Manual.

GFK-0356Q

Chapter 5 CPUs

5-17

Hardware Features of the 350-364 CPUs

CPU350 and CPU360 Hardware Features

These two modules look identical except for labeling.

■ These modules feature an LED light, labeled “PS Port” that indicates serial port activity

through the serial connector on the PLC power supply. Typically, this LED will flash while

data is being transferred through the port, and will stay off when the port is inactive.

■ These modules also have the keyswitch, described earlier in this chapter, that is standard on the

350-364 CPUs.

CPU Firmware Upgrade

The CPU firmware, which is stored in Flash memory, is loaded through the serial port connector on

the PLC Power Supply.

PORT

CPU 350

CPU 360

OFF

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GFK-0356Q

CPU351, CPU352, and CPU363 Hardware Features

These three modules are similar in features and functionality. The CPU351 and CPU352 look

identical except for labeling. The CPU363 has the same features as the other two, but the

orientation of its Port 1 and Port 2 connectors is reversed from those of the CPU351 and CPU352,

and its LED indicator lights, key switch, and shield ground connector are in different locations.

(The shield ground connector is on the front panel of the CPU363, labeled “FRAME,” but is

located on the bottom of the CPU351 and CPU352 modules.)

CPU 351

SNP

PORT

CPU 363

OFF

ON/RUN

OFF/

PORT 1

STOP

RS-232

PIN 1

PORT 1

PIN 1

RS-232

PORT 2

RS-485

PIN 1

PORT 2

RS-485

FRAME

Shield Ground

Connector

Figure 5-4. CPUs 351, 352, and 363

CPU Firmware Upgrade

The CPU firmware, which is stored in Flash memory, is loaded through the Port 1 connector on

these modules’ faceplate using Loader software supplied with the firmware upgrade kit. The

IC693CBL316 cable can be used for this purpose (see Chapter 10 for data sheet on this cable).

Keyswitch

This is a standard CPU keyswitch, discussed earlier in this chapter.

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Chapter 5 CPUs

5-19

Shield Ground Connection Tab

This tab is located on the bottom of the CPU351 and 352 modules and on the front of the CPU363

module. It is used to make the module’s shield ground connection. A wire with the applicable

terminal ends is supplied with the module for this purpose. Please see the section ”Module Shield

Grounding” in Chapter 2 (“Installation”) for details.

Serial Ports

The 351, 352, and 363 CPUs have three serial ports. One is accessed through a connector on the

PLC power supply (standard serial port found on all Series 90-30 CPUs), and the connectors for the

other two are on the modules’ front panel, labeled Port 1 and Port 2.

The CPU351, 352, and 363 serial ports are configurable using the programming software

configuration function. Each port can also be configured using a COMM_REQ. For details about

using these ports and about the COMM_REQ instruction, please see publication GFK-0582, Series

90 PLC Serial Communications User’s Manual.

Serial Port Front Panel Connectors

■ Port 1, the top port is RS-232 compatible. This port has a 6-pin RJ-11 connector. This

connector has female contacts and is similar to modular jacks commonly used for telephones

and modems. The IC693CBL316 can be used to access this port, providing a direct connection

to an RS-232 device without the need for a converter. See Chapter 10 for a datasheet on this

cable.

■ Port 2, the bottom port is RS-485 compatible. Access to Port 2 is through a 15-pin D

connector that has female contacts.

Serial Port Status LEDs

The CPU351 and CPU352 have three LEDs that indicate the status of serial port activity on the

CPU.

■ The SNP LED on the CPU351 and CPU352 is called PS Port on the CPU363. This refers to

the port that uses the serial connector on the PLC’s power supply. This LED flashes when data

is being transferred through the port. It remains off when the port is inactive.

■ The P1 LED will flash when data is being transferred through Port 1, the RS-232 port. It

remains off when the port is inactive.

■ The P2 LED will flash when data is being transferred through Port 2, the RS-485 port. It

remains off when the port is inactive.

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Protocols Supported

Starting with Firmware Release 9.00, breakfree SNP became the default protocol on the three

Serial Ports on these modules. See “Breakfree SNP Protocol” on page 5-13 for details.

SNP Port (Through Power Supply Connector)

■ SNP slave

■ SNP-X slave

Port 1 and Port 2 (Through Module’s Front Panel Connectors)

■ SNP master and slave

■ SNP-X master and slave

■ RTU slave (starting with Firmware Release 8.0)

■ Serial I/O - Limited functionality (write only) starting with Firmware Release 8.0, will have

full functionality (read and write) starting with Firmware Release 10.0. Used with autodialer

feature to call a pager. To use this feature, configure protocol as Custom. See GFK-0582,

Series 90 PLC Serial Communications User’s Manual for details.

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Chapter 5 CPUs

5-21

Pin Assignments for CPU351, CPU352, and CPU363 Serial Ports 1 & 2

The following two tables describe the pin assignments for each of the two front panel serial ports

on the CPU351, CPU352, and CPU363.

Table 5-6. Port 1 (RS-232)

Signal

Number

Name

Description

CTS

Clear To Send

TXD

Transmit Data

Signal Ground

RXD

Receive Data

RTS

Request to Send

Table 5-7. Port 2 (RS-485)

Signal

Number

Name

Description

Shield

Cable Shield

No Connection

+5VDC

Logic Power *

RTS(A)

Differential Request to Send

Signal Ground

CTS(B‘)

Differential Clear To Send

Resistor Termination

RD(A‘)

Differential Receive Data

RD(B‘)

Differential Receive Data

SD(A)

Differential Send Data

SD(B)

Differential Send Data

RTS(B’)

Differential Request To Send

CTS(A’)

Differential Clear To Send

* Note that Pin 5 provides Isolated +5 VDC power (100 mA maximum) for

powering external options.

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GFK-0356Q

CPU364 Hardware Features

This module has four LED indicator lights, an Ethernet Restart pushbutton, a standard CPU

keyswitch, three port connectors, and a shield ground connection tab (labeled “FRAME”).

EOK

PORT

LAN

CPU 364

STAT

OFF

ETHERNET

RESTART

PORT 1

RS-232

PIN 1

AAUI

10BASE T

FRAME

LED Indicators

There are four LED Indicators. Three relate to the Ethernet interface: EOK, LAN, and STAT.

These can be ON, OFF, FLASHING slow, or FLASHING fast in several different combinations.

The full functionality of these LEDs is detailed in GFK-1541, TCP/IP Ethernet Communications

for the Series 90 PLC User’s Manual.

The fourth LED, PS PORT, is for the CPU’s serial port and is not related to the Ethernet interface.

This LED will flash while data is being transferred through the SNP serial port connector on the

PLC power supply, and will stay off when the port is inactive. (On some early production 364

CPUs, this LED is labeled “SNP.”) All Series 90-30 CPUs have this standard serial port.

Ethernet Restart Pushbutton

This pushbutton performs four functions: LED test, Restart, Restart and enter Software Load state,

and Restart and enter Maintenance state. These are detailed in GFK-1541, TCP/IP Ethernet

Communications for the Series 90 PLC User’s Manual.

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Chapter 5 CPUs

5-23

Keyswitch

This is a standard CPU keyswitch, discussed earlier in this chapter.

Front Panel Connectors

The full functionality of these ports is detailed in GFK-1541, TCP/IP Ethernet Communications for

the Series 90 PLC User’s Manual.

■ Port 1, RS-232 - This connector is used for two purposes: (1) To connect a terminal or

terminal emulator to access the Station Manager software on the Ethernet Interface. (2) To

connect to a Personal Computer that will be used to update the Ethernet Interface firmware

(the CPU firmware is updated separately through the connector on the power supply). This

RJ-11 connector has the same pinout as Port 1 of the CPUs 351, 352, and 353, shown in Table

5-5. The IC693CBL316 cable can be used to access this port. See Chapter 10 for a data sheet

on this cable.

■ AAUI port - This 14-pin AAUI port connects via a user-supplied IEEE 802.3 transceiver

cable to an external Ethernet-compatible transceiver such as the GE Fanuc catalog number

IC649AEA102 (for 10Base T) or IC649AEA103 (for 10Base 2). See Appendix J for details on

these transceivers.

■

10Base T port - This 8-pin, RJ-45 port provides a direct connection to a 10Base T (twisted

pair) Ethernet network without the need for an external transceiver.

Shield Ground Connection Tab

This tab is used to make the module’s shield ground connection. A wire with the applicable

terminal ends is supplied with the module for this purpose. Please see the section “CPU363 and

364 Shield Grounding” in Chapter 2 (“Installation”) for details.

Firmware Upgrade

■ The CPU firmware, which is stored in Flash memory, is loaded through the serial port

connector on the PLC Power Supply using a personal computer that has been equipped with

the loader and CPU firmware software.

■ The Ethernet Interface firmware, stored in Flash memory, is loaded through the module’s front

panel Port 1 connector using a personal computer that has been equipped with the loader and

Ethernet firmware software. Cable IC693CBL316 is required (see Chapter 10 for details on

this cable).

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CPU374 Hardware Features

This module has eight LED indicators, an Ethernet Restart pushbutton, a standard CPU keyswitch,

three port connectors, and a shield ground connection tab (labeled “FRAME”).

EOK

PORT

LAN

STAT

CPU 374

OFF

ETHERNET

RESTART

STATION

MGR

PIN 1

LINK/ACT

PORT 1

100Mbps

LINK/ACT

PORT 2

100Mbps

FRAME

LED Indicators

There are four LED Indicators. Three relate to the Ethernet interface: EOK, LAN, and STAT.

These can be ON, OFF, FLASHING slow, or FLASHING fast in several different combinations.

The full functionality of these LEDs is detailed in GFK-1541, TCP/IP Ethernet Communications

for the Series 90 PLC User’s Manual.

The fourth LED, PS PORT, is for the CPU’s serial port and is not related to the Ethernet interface.

This LED will flash while data is being transferred through the SNP serial port connector on the

PLC power supply, and will stay off when the port is inactive. All Series 90-30 CPUs have this

standard serial port.

Ethernet Restart Pushbutton

This pushbutton performs four functions: LED test, Restart, Restart and enter Software Load state,

and Restart and enter Maintenance state. These are detailed in GFK-1541, TCP/IP Ethernet

Communications for the Series 90 PLC User’s Manual.

GFK-0356Q

Chapter 5 CPUs

5-25

Keyswitch

This is a standard CPU keyswitch, discussed on page 3-15.

Front Panel Connectors

The full functionality of these ports is detailed in GFK-1541, TCP/IP Ethernet Communications for

the Series 90 PLC User’s Manual.

■ Station Mgr - This connector is used to connect a terminal or terminal emulator to access the

Station Manager software on the Ethernet Interface. This RJ-11 connector has the same pinout

as Port 1 of the CPUs 351, 352, 353, and 364 shown in Table 5-5. The IC693CBL316 cable

can be used to access this port. See Chapter 10 for a data sheet on this cable.

■

10/100 Ethernet (Port 1 and Port 2) - these two 8-pin, RJ-45 ports provide a direct

connection to an Ethernet network via an embedded network switch.

The two Ethernet ports are 10-BASE-T/100-BASE-Tx Autonegotiating Full-Duplex ports,

which provide direct connection to one or two 10-BASE-T/100-BASE-TX cat 5 (twisted pair)

Ethernet LAN cables. Cables may be shielded or unshielded, and direct or cross-over. Please

note that the ports are connected to an embedded switch. There is not a separate IP address for

each port.

The LINK/ACT LED on each port goes on when a network link is established and blinks when

data is being transferred through the port. The 100Mbps LED goes on if the network link has

been established at 100 MBPS and goes off if the network link has been established at

10Mbps.

Shield Ground Connection Tab

This tab is used to make the module’s shield ground connection. A wire with the applicable

terminal ends is supplied with the module for this purpose. Please see the section “CPU363, 364,

and 374 Shield Grounding” in Chapter 2 (“Installation”) for details.

Firmware Upgrade

■ The CPU and Ethernet Interface firmware, which is stored in Flash memory, is loaded through

the serial port connector on the PLC Power Supply using a personal computer that has been

equipped with the loader and CPU firmware software.

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CPU Data Sheets

This section provides data sheets describing each of the Series 90-30 CPU modules. For

information on the State Logic CPUs, see Chapter 9, “State Logic Products.”

CPU Model List

■ IC693CPU311

5-slot baseplate with embedded CPU, 1K Byte Register Memory

■ IC693CPU313

5-slot baseplate with embedded CPU, 2K Bytes Register Memory

■ IC693CPU323

10-slot baseplate with embedded CPU

■ IC693CPU331

CPU module, 10 MHz

■ IC693CPU340

CPU module, 20 MHz, 32K Bytes User Program Memory

■ IC693CPU341

CPU module, 20 MHz, 80K Bytes User Program Memory

■ IC693CPU350

CPU module, 25 MHz

■ IC693CPU351

CPU module, 25 MHz, with two extra serial ports

■ IC693CPU352

CPU module, 25 MHz, math coprocessor, two extra serial ports

■ IC693CPU360

CPU module, 25 MHz

■ IC693CPU363

CPU module, 25 MHz, with two extra serial ports

■ IC693CPU364

CPU module, 25 MHz, with Ethernet interface

■ IC693CPU374

CPU module, 133 MHz, 240K bytes User Program Memory with

Ethernet communications

GFK-0356Q

Chapter 5 CPUs

5-27

CPU311

Catalog Number IC693CPU311

PROGRAMMABLE

CONTROLLER

BASE 5-SLOT

WITH CPU

CAUTION

SYSTEM

PROGRAM

PROM

USER PROGRAM

AND REGISTER

VALUES MAY BE

LOST IF POWER

SUPPLY IS

REMOVED FOR

LONGER THAN

i HOUR

POWER

SUPPLY

CPU Type

5-slot baseplate with embedded CPU

Total Baseplates per System

Load Required from Power Supply

410 milliamps from +5 VDC supply

Processor Speed

10 MegaHertz

Processor Type

80188

Operating Temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

Typical Scan Rate

18 milliseconds per 1K of logic (boolean contacts)

User Program Memory (maximum)

6K Bytes

Discrete Input Points - %I

160 (maximum - combined inputs + outputs)

Discrete Output Points - %Q

160 (maximum - combined outputs + inputs)

Discrete Global Memory - %G

1280 bits

Internal Coils - %M

1024 bits

Output (Temporary) Coils - %T

256 bits

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

512 words

Analog Inputs - %AI

64 words

Analog Outputs - %AQ

32 words

System Registers (for reference table viewing

16 words (%SR)

only; cannot be referenced in user logic program)

Timers/Counters

170

Shift Registers

yes

Built-in Serial Ports

1 (uses connector on PLC power supply). Supports SNP slave

and SNP-X slave protocols.

Communications

LAN - Supports multidrop. Also supports Ethernet, FIP,

Profibus, GBC, GCM, GCM+ option modules.

Override

Battery Backed Clock

Interrupts

Type of Memory Storage

RAM and optional EPROM or EEPROM

PCM/CCM Compatibility

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CPU313

Catalog Number IC693CPU313

PROGRAMMABLE

CONTROLLER

BASE 5-SLOT

WITH CPU

CAUTION

SYSTEM

PROGRAM

PROM

USER PROGRAM

AND REGISTER

VALUES MAY BE

LOST IF POWER

SUPPLY IS

REMOVED FOR

LONGER THAN

i HOUR

POWER

SUPPLY

CPU Type

5-slot baseplate with embedded CPU

Total Baseplates per System

Load Required from Power Supply

430 milliamps from +5 VDC supply

Processor Speed

10 MegaHertz

Processor Type

80188

Operating Temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

Typical Scan Rate

0.6 milliseconds per 1K of logic (boolean contacts)

User Program Memory (maximum)

12K Bytes (6K bytes prior to release 7)

Discrete Input Points - %I

160 (maximum - combined inputs + outputs)

Discrete Output Points - %Q

160 (maximum - combined outputs + inputs)

Discrete Global Memory - %G

1280 bits

Internal Coils - %M

1024 bits

Output (Temporary) Coils - %T

256 bits

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

1024 words

Analog Inputs - %AI

64 words

Analog Outputs - %AQ

32 words

System Registers (for reference table viewing

16 words (%SR)

only; cannot be referenced in user logic program)

Timers/Counters

170

Shift Registers

yes

Built-in Ports

1 (uses connector on PLC power supply). Supports SNP slave

and SNP-X slave protocols.

Communications

LAN - Supports multidrop. Also supports Ethernet, FIP,

Profibus, GBC, GCM, GCM+ option modules.

Override

Battery Backed Clock

Interrupts

Type of Memory Storage

RAM and optional EPROM or EEPROM

PCM/CCM Compatibility

GFK-0356Q

Chapter 5 CPUs

5-29

CPU323

Catalog Number IC693CPU323

CPU Type

10-slot baseplate with embedded CPU

Total Baseplates per System

Load Required from Power Supply

430 milliamps from +5 VDC supply

Processor Speed

10 MegaHertz

Processor Type

80188

Operating Temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

Typical Scan Rate

0.6 milliseconds per 1K of logic (boolean contacts)

User Program Memory (maximum)

12K Bytes (6K bytes prior to release 7)

Discrete Input Points - %I

320 (maximum - combined inputs + outputs)

Discrete Output Points - %Q

320 (maximum - combined outputs + inputs)

Discrete Global Memory - %G

1280 bits

Internal Coils - %M

1024 bits

Output (Temporary) Coils - %T

256 bits

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

1024 words

Analog Inputs - %AI

64 words

Analog Outputs - %AQ

32 words

System Registers (for reference table viewing

16 words (%SR)

only; cannot be referenced in user logic

program)

Timers/Counters

340

Shift Registers

yes

Built-in Ports

1 (uses connector on PLC power supply). Supports SNP slave

and SNP-X slave protocols.

Communications

LAN - Supports multidrop. Also supports Ethernet, FIP,

Profibus, GBC, GCM, GCM+ option modules.

Override

Battery Backed Clock

Interrupts

Type of Memory Storage

RAM and optional EPROM or EEPROM

PCM/CCM Compatibility

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Series 90-30 PLC Installation and Hardware Manual - August 2002

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CPU331

Catalog Number IC693CPU331

CPU Type

Single slot CPU module

Total Baseplates per System

5 (1 CPU baseplate + 4 expansion and/or remote)

Load Required from Power Supply

350 milliamps from +5 VDC supply

Processor Speed

10 MegaHertz

Processor Type

80188

Operating Temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

Typical Scan Rate

0.4 milliseconds per 1K of logic (boolean contacts)

User Program Memory (maximum)

16K Bytes

Discrete Input Points - %I

512

Discrete Output Points - %Q

512

Discrete Global Memory - %G

1280 bits

Internal Coils - %M

1024 bits

Output (Temporary) Coils - %T

256 bits

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

2048 words

Analog Inputs - %AI

128 words

Analog Outputs - %AQ

64 words

System Registers (for reference table viewing

16 words (%SR)

only; cannot be referenced in user logic program)

Timers/Counters

680

Shift Registers

yes

Built-in Ports

1 (uses connector on PLC power supply). Supports

SNP/SNP-X slave protocols. Requires CMM module

for SNP/SNP-X master, CCM, or RTU slave support;

PCM module for RTU master support.

Communications

LAN - Supports multidrop. Also supports Ethernet,

FIP, Profibus, GBC, GCM, GCM+ option modules.

Override

yes

Battery Backed Clock

yes

Interrupts

Type of Memory Storage

RAM and optional EPROM or EEPROM

PCM/CCM Compatibility

Yes

GFK-0356Q

Chapter 5 CPUs

5-31

CPU340

Catalog Number IC693CPU340

CPU Type

Single slot CPU module

Total Baseplates per System

5 (1 CPU baseplate + 4 expansion and/or remote)

Load Required from Power Supply

490 milliamps from +5 VDC supply

CPU340

Processor Speed

20 MegaHertz

Processor Type

80C188XL

Operating Temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

Typical Scan Rate

0.3 milliseconds per 1K of logic (boolean contacts)

User Program Memory (maximum)

32K Bytes

Discrete Input Points - %I

512

Discrete Output Points - %Q

512

Discrete Global Memory - %G

1280 bits

Internal Coils - %M

1024 bits

Output (Temporary) Coils - %T

256 bits

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

9999 words

Analog Inputs - %AI

1024 words

Analog Outputs - %AQ

256 words

System Registers (for reference table viewing

16 words (%SR)

only; cannot be referenced in user logic program)

Timers/Counters

>2000

Shift Registers

yes

Built-in Ports

1 (uses connector on PLC power supply). Supports

SNP/SNP-X slave protocols. Requires CMM module for

SNP/SNP-X master, CCM, or RTU slave support; PCM

module for RTU master support.

Communications

LAN - Supports multidrop. Also supports Ethernet, FIP,

Profibus, GBC, GCM, GCM+ option modules.

Override

yes

Battery Backed Clock

yes

Interrupts

yes

Type of Memory Storage

RAM and optional Flash

PCM/CCM Compatibility

yes

5-32

Series 90-30 PLC Installation and Hardware Manual - August 2002

GFK-0356Q

CPU341

Catalog Number IC693CPU341

CPU Type

Single slot CPU module

Total Baseplates per System

5 (1 CPU baseplate + 4 expansion and/or remote)

Load Required from Power Supply

490 milliamps from +5 VDC supply

CPU341

Processor Speed

20 MegaHertz

Processor Type

80C188XL

Operating Temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

Typical Scan Rate

0.3 milliseconds per 1K of logic (boolean contacts)

User Program Memory (maximum)

80K Bytes

Discrete Input Points - %I

512

Discrete Output Points - %Q

512

Discrete Global Memory - %G

1280 bits

Internal Coils - %M

1024 bits

Output (Temporary) Coils - %T

256 bits

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

9999 words

Analog Inputs - %AI

1024 words

Analog Outputs - %AQ

256 words

System Registers (for reference table viewing

16 words (%SR)

only; cannot be referenced in user logic program)

Timers/Counters

>2000

Shift Registers

yes

Built-in Ports

1 (uses connector on PLC power supply). Supports

SNP/SNP-X slave protocols. Requires CMM module for

SNP/SNP-X master, CCM, or RTU slave support; PCM

module for RTU master support.

Communications

LAN - Supports multidrop. Also supports Ethernet, FIP,

Profibus, GBC, GCM, GCM+ option modules.

Override

yes

Battery Backed Clock

yes

Interrupts

yes

Type of Memory Storage

RAM and optional EPROM or EEPROM for early

versions. Starting with hardware version IC693CPU341-J

and firmware Release 4.61, only RAM and optional Flash

are supported.

PCM/CCM Compatibility

yes

GFK-0356Q

Chapter 5 CPUs

5-33

CPU350

Catalog Number IC693CPU350

CPU Type

Single slot CPU module

Total Baseplates per System

8 (CPU baseplate + 7 expansion and/or remote)

Load Required from Power Supply

670 milliamps from +5 VDC supply

PORT

Processor Speed

25 MegaHertz

CPU 350

Processor Type

80386EX

Operating Temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

OFF

Typical Scan Rate

0.22 milliseconds per 1K of logic (boolean contacts)

User Program Memory (maximum)

32K Bytes (not configurable)

Discrete Input Points - %I

2,048

Discrete Output Points - %Q

2,048

Discrete Global Memory - %G

1,280 bits

Internal Coils - %M

4,096 bits

Output (Temporary) Coils - %T

256 bits

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

9,999 words

Analog Inputs - %AI

2,048 words

Analog Outputs - %AQ

512 words

System Registers (for reference table viewing

28 words (%SR)

only; cannot be referenced in user logic program)

Timers/Counters

>2,000

Shift Registers

Yes

Built-in Serial Port

1 (uses connector on PLC power supply). Supports

SNP/SNP-X slave protocols. Requires CMM module for

SNP/SNP-X master, CCM, or RTU slave protocol

support; PCM module for RTU master support.

Communications

LAN - Supports multidrop. Also supports Ethernet, FIP,

Profibus, GBC, GCM, GCM+ option modules.

Override

Yes

Battery Backed Clock

Yes

Interrupts

Supports the periodic subroutine feature

Type of Memory Storage

RAM and Flash

PCM/CCM Compatibility

Yes

Floating Point Math Support

Yes. Firmware-based in firmware releases 9.0 and later.

5-34

Series 90-30 PLC Installation and Hardware Manual - August 2002

GFK-0356Q

CPU351

Catalog Number IC693CPU351

CPU Type

Single slot CPU module

Total Baseplates per System

8 (CPU baseplate + 7 expansion and/or remote)

Load Required from Power Supply

890 milliamps from +5 VDC supply

CPU 351

SNP

Processor Speed

25 MegaHertz

Processor Type

80386EX

Operating Temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

Typical Scan Rate

0.22 milliseconds per 1K of logic (boolean contacts)

User Program Memory (maximum)

Starting with firmware Release 9.0, 240K Bytes. Note:

ON/RUN

Actual size of available user program memory depends on the

OFF/

amounts configured for the %R, %AI, and %AQ configurable

STOP

word memory types (see below).

For firmware prior to Release 9.0, fixed size is 80K bytes.

PORT 1

Discrete Input Points - %I

2,048

RS-232

Discrete Output Points - %Q

2,048

Discrete Global Memory - %G

1,280 bits

Internal Coils - %M

4,096 bits

Output (Temporary) Coils - %T

256 bits

PORT 2

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

RS-485

Starting with firmware Release 9.0, configurable in 128 word

increments from 128 to 16,384 word with Logicmaster and

from 128 to 32,640 words with Control version 2.2. For

firmware prior to Release 9.0, fixed size is 9,999 words.

Analog Inputs - %AI

Starting with firmware Release 9.0, configurable in 128 word

increments from 128 to 16,384 word with Logicmaster and

from 128 to 32,640 words with Control version 2.2. For

firmware prior to Release 9.0, fixed size is 9,999 words.

Model 351 CPU

Analog Outputs - %AQ

Starting with firmware Release 9.0, configurable in 128 word

increments from 128 to 16,384 word with Logicmaster and

from 128 to 32,640 words with Control version 2.2. For

firmware prior to Release 9.0, fixed size is 9,999 words.

System Registers (for reference table viewing

28 words (%SR)

only; cannot be referenced in logic program)

Timers/Counters

>2,000

Shift Registers

Yes

Built-in Serial Ports

Three ports. Supports SNP/SNPX slave (on power supply

connector) and RTU slave, SNP/SNPX master/slave , Serial

I/O (on Ports 1 and 2). Requires CMM module for CCM;

PCM module for RTU master support.

Communications

LAN - Supports multidrop. Also supports Ethernet, FIP,

Profibus, GBC, GCM, GCM+ option modules.

Override

Yes

Battery Backed Clock

Yes

Interrupt Support

Supports the Periodic Subroutine feature.

Type of Memory Storage

RAM and Flash

PCM/CCM Compatibility

Yes

Floating Point Math Support

Yes, firmware-based in firmware Release 9.0 and later.

The CPU351 is supported by Logicmaster 90-30/20/Micro programming and configuration software Release 6.00 and

later releases, and Control programming and configuration software Release 2.0 and later releases.

GFK-0356Q

Chapter 5 CPUs

5-35

CPU352

Catalog Number IC693CPU352

CPU Type

Single slot CPU module

Total Baseplates per System

8 (CPU baseplate + 7 expansion and/or remote)

Load Required from Power Supply

890 milliamps from +5 VDC supply

CPU 352

SNP

Processor Speed

25 MegaHertz

Processor Type

80386EX

Operating Temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

Typical Scan Rate

0.22 milliseconds per 1K of logic (boolean contacts)

User Program Memory (maximum)

Starting with firmware Release 9.0, 240K Bytes. Note: Actual

ON/RUN

size of available user program memory depends on the

OFF/

amounts configured for the %R, %AI, and %AQ configurable

STOP

word memory types (see below).

For firmware prior to Release 9.0, fixed size is 80K bytes.

PORT 1

Discrete Input Points - %I

2,048

RS-232

Discrete Output Points - %Q

2,048

Discrete Global Memory - %G

1,280 bits

Internal Coils - %M

4,096 bits

Output (Temporary) Coils - %T

256 bits

PORT 2

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

RS-485

Starting with firmware Release 9.0, configurable in 128 word

increments from 128 to 16,384 word with Logicmaster and

from 128 to 32,640 words with Control version 2.2. For

firmware prior to Release 9.0, fixed size is 9,999 words.

Analog Inputs - %AI

Starting with firmware Release 9.0, configurable in 128 word

increments from 128 to 16,384 word with Logicmaster and

from 128 to 32,640 words with Control version 2.2. For

firmware prior to Release 9.0, fixed size is 9,999 words.

Model 352 CPU

Analog Outputs - %AQ

Starting with firmware Release 9.0, configurable in 128 word

increments from 128 to 16,384 word with Logicmaster and

from 128 to 32,640 words with Control version 2.2. For

firmware prior to Release 9.0, fixed size is 9,999 words.

System Registers (for reference table

28 words (%SR)

viewing only; cannot be referenced in logic

program)

Timers/Counters

>2,000

Shift Registers

Yes

Built-in Serial Ports

Three ports. Supports SNP/SNPX slave (on power supply

connector) and RTU slave, SNP/SNPX master/slave , Serial

I/O (on Ports 1 and 2). Requires CMM module for CCM;

PCM module for RTU master support.

Communications

LAN - Supports multidrop. Also supports Ethernet, FIP,

Profibus, GBC, GCM, GCM+ option modules.

Override

Yes

Battery Backed Clock

Yes

Interrupt Support

Supports the Periodic Subroutine feature.

Type of Memory Storage

RAM and Flash

PCM/CCM Compatibility

Yes

Floating Point Math Support

Yes, hardware-based (built-in math co-processor)

The CPU352 is supported by Logicmaster 90-30/20/Micro programming and configuration software Release 7.00 and

later releases, and Control programming and configuration software Release 2.0 and later releases.

5-36

Series 90-30 PLC Installation and Hardware Manual - August 2002

GFK-0356Q

CPU360

Catalog Number IC693CPU360

CPU Type

Single slot CPU module

Total Baseplates per System

8 (CPU baseplate + 7 expansion and/or remote)

Load Required from Power Supply

670 milliamps from +5 VDC supply

PORT

Processor Speed

25 MegaHertz

CPU 360

Processor Type

80386EX

Operating Temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

OFF

Typical Scan Rate

0.22 milliseconds per 1K of logic (boolean contacts)

User Program Memory (maximum)

Starting with firmware Release 9.0, 240K Bytes. Note: Actual

size of available user program memory depends on the

amounts configured for the %R, %AI, and %AQ configurable

word memory types (see below). For firmware prior to

Release 9.0, fixed size is 80K bytes.

Discrete Input Points - %I

2,048

Discrete Output Points - %Q

2,048

Discrete Global Memory - %G

1,280 bits

Internal Coils - %M

4,096 bits

Output (Temporary) Coils - %T

256 bits

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

Starting with firmware Release 9.0, configurable in 128 word

increments from 128 to 16,384 words with Logicmaster and

from 128 to 32,640 words with Control version 2.2. For

firmware prior to Release 9.0, fixed size is 9,999 words.

Analog Inputs - %AI

Starting with firmware Release 9.0, configurable in 128 word

increments from 128 to 16,384 words with Logicmaster and

from 128 to 32,640 words with Control version 2.2. For

firmware prior to Release 9.0, fixed size is 9,999 words.

Analog Outputs - %AQ

Starting with firmware Release 9.0, configurable in 128 word

increments from 128 to 16,384 words with Logicmaster and

from 128 to 32,640 words with Control version 2.2. For

firmware prior to Release 9.0, fixed size is 9,999 words.

System Registers (for reference table

28 words (%SR)

viewing only; cannot be referenced in

logic program)

Timers/Counters

>2,000

Shift Registers

Yes

Built-in Serial Ports

1 (uses connector on PLC power supply). Supports SNP slave

and SNP-X slave protocols. Requires CMM module for

SNP/SNP-X master, CCM, or RTU slave protocol support;

PCM module for RTU master support.

Communications

LAN - Supports multidrop. Also supports Ethernet, FIP,

Profibus, GBC, GCM, and GCM+ option modules.

Override

Yes

Battery Backed Clock

Yes

Interrupts

Yes

Type of Memory Storage

RAM and Flash

PCM/CCM Compatibility

Yes

Floating Point Math Support

Yes, firmware-based in firmware Release 9.0 and later.

GFK-0356Q

Chapter 5 CPUs

5-37

CPU363

Catalog Number IC693CPU363

CPU Type

Single slot CPU module

Total Baseplates per System

(CPU baseplate + 7 expansion and/or remote)

Load Required from Power Supply

890 milliamps from +5 VDC supply

PORT

Processor Speed

25 MegaHertz

CPU 363

Processor Type

80386EX

Operating Temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

Typical Scan Rate

0.22 milliseconds per 1K of logic (boolean contacts)

OFF

User Memory (total)

240K (245,760) Bytes. Actual size of available user

program memory depends on the amounts configured for

%R, %AI, and %AQ configurable word memory types

(see below).

Discrete Input Points - %I

2,048

PORT 1

RS-232

Discrete Output Points - %Q

2,048

Discrete Global Memory - %G

1,280 bits

Internal Coils - %M

4,096 bits

Output (Temporary) Coils - %T

256 bits

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

Configurable in 128 word increments from 128 to 16,384

words with Logicmaster and from 128 to 32,640 words

with Control version 2.2.

PORT 2

Analog Inputs - %AI

Configurable in 128 word increments from 128 to 16,384

RS-485

words with Logicmaster and from 128 to 32,640 words

with Control version 2.2.

Analog Outputs - %AQ

Configurable in 128 word increments from 128 to 16,384

words with Logicmaster and from 128 to 32,640 words

with Control version 2.2.

System Registers (for reference table viewing only;

28 words (%SR)

FRAME

cannot be referenced in user logic program)

Timers/Counters

>2,000

Shift Registers

Yes

Built-in Ports

Three ports. Supports SNP/SNPX slave (on power

supply connector). On Ports 1 and 2, supports

SNP/SNPX master/slave and RTU slave. Requires CMM

module for CCM; PCM module for RTU master support.

Communications

LAN - Supports multidrop. Also supports Ethernet, FIP,

Profibus, GBC, GCM, GCM+ option modules.

Override

Yes

Battery Backed Clock

Yes

Interrupt Support

Supports the periodic subroutine feature.

Type of Memory Storage

RAM and Flash

PCM/CCM Compatibility

Yes

Floating Point Mat h Support

Yes, firmware-based in firmware Release 9.0 and later.

5-38

Series 90-30 PLC Installation and Hardware Manual - August 2002

GFK-0356Q

CPU364

Catalog Number IC693CPU364

CPU Type

Single slot CPU module with embedded Ethernet Interface

Total Baseplates per System

8 (CPU baseplate + 7 expansion and/or remote)

Load Required from Power Supply

1.51 Amps from +5 VDC supply

EOK

SNP

Processor Speed

25 MegaHertz

LAN

CPU 364

Processor Type

80386EX

STAT

Ethernet fuse, replaceable

2.69x2.69x6.1 mm, 125V, 1A, slow acting

Operating temperature

0 to 60 degrees C (32 to 140 degrees F) ambient

OFF

Typical Scan Rate

0.22 milliseconds per 1K of logic (boolean contacts)

User Memory (total)

240K Bytes. Note: Actual size of available user program memory

ETHERNET

depends on the amounts configured for %R, %AI, and %AQ

RESTART

configurable word memory types (see below).

Discrete Input Points - %I

2,048

PORT 1

RS_232

Discrete Output Points - %Q

2,048

Discrete Global Memory - %G

1,280 bits

Internal Coils - %M

4,096 bits

Output (Temporary) Coils - %T

256 bits

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each)

AAUI

Configurable in 128 word increments from 128 to 16,384 words

with Logicmaster and from 128 to 32,640 words with Control

version 2.2.

Analog Inputs - %AI

Configurable in 128 word increments from 128 to 16,384 words

with Logicmaster and from 128 to 32,640 words with Control

version 2.2.

Analog Outputs - %AQ

Configurable in 128 word increments from 128 to 16,384 words

10BASE T

with Logicmaster and from 128 to 32,640 words with Control

version 2.2.

FRAME

System Registers (for reference table

28 words (%SR)

viewing only; cannot be referenced in logic

program)

Timers/Counters

>2,000

Shift Registers

Yes

Built-in Serial Ports

1 (uses connector on PLC Power Supply). Supports SNP/SNPX

slave. Requires CMM module for SNP/SNP-X master, RTU slave,

or CCM; PCM module for RTU master support.

Communications

Ethernet (internal) - AAUI or 10BASE-T. AAUI requires

external transceiver.

10BASE-T is direct.

Ethernet (additional) - Supports Ethernet option modules.

LAN-Requires option modules for Genius, Profibus, FIP.

Override

Yes

Battery Backed Clock

Yes

Interrupt Support

Supports the periodic subroutine feature.

Type of Memory Storage

RAM and Flash

PCM/CCM Compatibility

Yes

Floating Point Math Support

Yes, firmware-based.

Note: On some early modules, the LED labeled “PS PORT” may say “SNP” instead; otherwise,

the modules are identical.

GFK-0356Q

Chapter 5 CPUs

5-39

CPU374

Catalog Number IC693CPU374

CPU type

Single slot CPU module with embedded Ethernet Interface

Processor speed

133 MHz

EOK

PORT

Processor Type

Embedded 586

LAN

Typical Scan Rate

0.15 milliseconds per 1K of logic (boolean contacts)

STAT

CPU 374

Type of Memory Storage

RAM and Flash

OFF

User Memory (total)

240KB (245,760) Bytes. Note: Actual size of available user

program memory depends on the amounts configured for %R,

ETHERNET

%AI, and %AQ configurable word memory types.

RESTART

Discrete Input Points - %I

2,048 (fixed)

STATION

MGR

Discrete Output Points - %Q

2,048 (fixed)

Discrete Global Memory - %G

1,280 bits (fixed)

Internal Coils - %M

4,096 bits (fixed)

LINK/ACT

Output (Temporary) Coils - %T

256 bits (fixed)

PORT 1

System Status References - %S

128 bits (%S, %SA, %SB, %SC - 32 bits each) (fixed)

100Mbps

Configurable 128 to 32,640 words

Analog Inputs - %AI

Configurable 128 to 32,640 words

LINK/ACT

Analog Outputs - %AQ

Configurable 128 to 32,640 words

PORT 2

System Registers - %SR

28 words (fixed)

100Mbps

Timers/Counters

>2,000 (depends on available user memory)

FRAME

Battery Backed Clock

Yes

Battery Back Up (Number of months

1.2 months for internal battery (installed in the power supply)

with no power)

15 months with external battery (IC693ACC302)

Load Required from Power Supply

7.4 watts of 5VDC. High Capacity power supplies recommended.

EZ Program Store Device

Yes

Total Baseplates per System

8 (CPU baseplate + 7 expansion and/or remote)

Interrupt Support

Supports the periodic subroutine feature.

Communications and Programmable

Yes

Coprocessor Compatibility

Override

Yes

Floating Point Math

Yes, Hardware Floating Point Math

Programming Support

VersaPro 2.03 or later. CIMPLICITY Machine Edition Logic

Developer 2.60 or later. Control software version 2.50 or later.

Built-in Serial Ports

None. Supports RS-485 port on power supply.

Protocol Support

SNP and SNPX on power supply RS-485 port

Built-in Ethernet Communications

Ethernet (built-in) - 10/100 base-T/TX Ethernet Switch

Number of Ethernet Ports

Two, both are 10/100baseT/TX ports with auto sensing. RJ-45

connection.

Number of IP Addresses

One

Protocols

SRTP and Ethernet Global Data (EGD). No channel support.

Web Server Support

None

Operating Temperature

0 to 60°C (32 to 140°F) ambient

Storage Temperature

-40°C to +85°C

Agency Approvals

UL508, C-UL (Class I, DIV II, A, B, C, D), CE Mark

Low Temperature (LT) Testing

Yes. The CPU374 is available for -40° to 60°C operation.

5-40

Series 90-30 PLC Installation and Hardware Manual - August 2002

GFK-0356Q

Chapter

Memory Backup/Battery Backup

Backup Battery for RAM Memory (All Supplies)

The long-life Lithium battery (IC693ACC301) used to maintain the contents of the CMOS RAM

memory in the CPU is accessed by removing the cover plate located at the bottom of the power

supply faceplate. This battery is mounted on a plastic clip attached to the inside of this cover.

The battery is wired to a small Berg female connector that connects to either of the two Berg male

connectors mounted on the Power Supply printed circuit board. This battery can be replaced with

power applied to the PLC.

PWR

RUN

Low Battery

BATT

Warning LED

BATTERY

CONNECTORS

LITHIUM

BACK-UP

BATTERY

Battery

Cavity

Battery Cover Removal Notch

Figure 6-1. Backup Battery for RAM Memory

Caution

If a Low Battery Warning (BATT LED turns ON) occurs, replace the

battery located in the power supply before removing power from the rack.

Otherwise, there is a possibility that data will be corrupted or the

application program will be cleared from memory.

GFK-0356Q

6-1

Battery Replacement Instructions

Warning

To avoid the chance of losing the contents of RAM memory, you can

carefully perform the following steps with PLC power ON. This procedure

should only be performed by qualified electrical personnel who are trained

in applicable electrical safety rules and procedures. Failure to follow

standard electrical safety practice can result in injury or death to personnel,

damage to equipment, or both.

■

Carefully insert the tip a small pocket-size screwdriver approximately 1/4 inch (6 mm) into the

battery cover removal slot, located beneath the battery cover (see previous figure).

■

Gently rotate the screwdriver about 45 degrees to loosen the cover.

■

Remove cover with fingers. The battery is mounted in a clip on the back of the cover. It has a

pair of leads with a connector that is plugged-in to a connector on a circuit board inside the

power supply.

■

Carefully reach into battery cavity with your fingers (do not use a metal object to do this) and

unplug the battery connector.

■

Remove the old battery from the clip on the battery cover and set it aside. Be careful not to

mix it up with the new battery.

■

Carefully reach into battery cavity with your fingers (do not use a metal object to do this) and

plug in new battery connector.

■

Clip new battery into clip on battery cover.

■

Snap battery cover back onto power supply.

6-2

Series 90-30 PLC Installation and Hardware Manual - August 2002

GFK-0356Q

Battery Replacement/Memory Protection Factors

Since there are differences in each PLC application, each user will have to determine on an

individual basis what strategy to use. There are several factors to consider when planning a battery

replacement/memory protection strategy:

■ How critical is the application? Will considerable loss be sustained if the PLC goes down? If

so, frequent replacement of the battery would be a wise choice. For critical applications, the

cost of a battery would be quite low in comparison to the cost of a PLC shut-down.

■ How readily can a backup program be loaded? Are there technicians on-site who know how to

load a backup program? Is the backup program accessible at all times to those responsible for

maintaining the equipment? Is a personal computer or equivalent equipped with GE Fanuc

programming software available at all times for use in loading the backup program?

■ Do you have a preventive maintenance program? A formal program would help ensure that

the battery is replaced on time. Some users replace the backup battery each year during their

annual shut-down period.

■ How accessible is the PLC? In some applications, the PLC may be mounted in a remote

location that is not easily accessed.

■ Safety codes. Some users may have safety rules that would not allow replacing the battery

with power applied.

■ How is the PLC used? Is power left on all the time, or is it shut down every day? See the

heading “Factors Affecting Battery Life.”

■ Some users run without a backup battery by using one of the PROM options. See the section

below called “Operating Without a Memory Backup Battery” to determine if this strategy is

suitable for your application.

The Importance of Backing up Your Program

Regardless of what strategy you use to maintain PLC memory, you should always keep an up-to-

date backup copy of your application program. Other suggestions to help minimize down time:

■ Make sure the backup copy is readily accessible to those who may need to use it.

■ Train more than one person to load the backup program in case that one person is not available

when needed. Information on creating a backup can be found in GE Fanuc ’s software user’s

manuals. This procedure is also covered in applicable GE Fanuc programming software

training courses.

■ Ensure that a suitable computer is equipped with GE Fanuc PLC programming software and

will be readily available to load the backup program to the PLC.

■ Create a written backup procedure. Fortunately, restoring your program from the backup copy

is probably not something you will do very often. As a result, however, some of the steps

could easily be forgotten.

GFK-0356Q

Chapter 6 Memory Backup/Battery Backup

6-3

Factors Affecting Battery Life

Replacing your battery once per year is a good rule of thumb. However, no one can predict

precisely how long a backup battery will last because this depends upon what CPU is used, what

temperature it is subjected to, and how it used. Considering the following list of factors that affect

battery life will help you decide how frequently to replace the battery in your application:

■ A battery that is not in use has an estimated life (called its ”shelf life”) of 5 years at ”room

temperature” (25 degrees C, or 77 degrees F).

■ A battery that is used continuously (supplying current to memory circuits with PLC power off)

if used at room temperature has an estimated average life as follows:

Model

Estimated Average Life

at Room Temperature

CPU models 311, 313 and 323

2 years

CPU models 331—364

1 year

CPU374

1.2 months

■ As long as a PLC is powered up, its battery is not being used; so how often you power down

your PLC has a direct affect on battery life. Some users keep their PLC powered up all of the

time while others turn theirs off every night.

■ Temperature has a relatively large affect on battery life. Temperatures considerably above

room temperature (25 degrees C, or 77 degrees F), or below freezing (0 degrees C, or 32

degrees F) will appreciably shorten battery life.

■ The type of CPU has a small affect on battery life. Some CPUs have more memory than

others. Some memory types require more power. Also, some CPUs have a clock and some do

not. More memory requires more battery current to maintain its contents; and a clock requires

battery current to maintain its operation.

Low Battery Warning Methods

There are three basic ways that the PLC warns of a low battery:

■ The red ”BATT” LED on the Power Supply module lights when the battery is low. The

disadvantage of this method is that the PLC is often mounted in an enclosure, so this LED

might not be easily seen.

■ The PLC Fault Table is updated with a battery low message. Viewing the PLC Fault Table

requires that a programmer be connected to the PLC.

■ Certain System Reference bits are set to logic 1 when the battery is low. These are %SA011

(LOW_BAT), %SC009 (ANY_FLT), %S010 (SY_FLT), and %SC012 (SY_PRES). The most

specific is %SA011 (LOW_BAT). This bit could be used as a contact in your ladder logic

program to turn on an output that controls a warning light on an operator panel (as in the

example rung below), or to send a warning to an operator interface terminal.

%SA011

%Qxxx

6-4

Series 90-30 PLC Installation and Hardware Manual - August 2002

GFK-0356Q

FANUC Series 90-30 PLC. Installation and Hardware Manual (GFK-0356Q) - page 5