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

Table 4-5. Specifications for IC693PWR330 High Capacity AC/DC Input Power Supply

Nominal Rated Voltage

120/240 VAC or 125 VDC

Input Voltage Range

85 to 264 VAC

100 to 300 VDC

Input Power

100 VA with VAC Input

(Maximum with Full Load)

50 W with VDC Input

Inrush Current

4A peak, 250 ms maximum

Output Power

5 VDC:

30 watts maximum

24 VDC Relay:

15 watts maximum

24 VDC Isolated: 20 watts maximum

NOTE: 30 watts maximum total (all three outputs)

Output Voltage

5 VDC: 5.0 VDC to 5.2 VDC (5.1 VDC nominal)

24 VDC Relay:

24 to 28 VDC

24 VDC Isolated:

21.5 VDC to 28 VDC

Protective Limits

Overvoltage:

5 VDC output: 6.4 to 7 V

Overcurrent:

5 VDC output: 7 A maximum

Holdup Time:

20 ms minimum

Field Wiring Connections for the AC/DC Input Power Supplies

The two AC/DC input power supplies have six terminals for user connections. These connections

are described below.

AC Power Source Connections

The Hot, Neutral, and Ground wires from the 120 VAC power source or L1, L2, and

Ground wires from the 240 VAC power source connect to the system through the top three

terminals of the terminal strip on the front of the power supply.

DC Power Source Connections

Connect the + and - wires from the 125 VDC (nominal) power source to the top two

terminals on the terminal connector. These connections are not polarity-sensitive on an

AC/DC input power supply. (However, the DC Input-only type supplies, which are

discussed later in this chapter, are polarity sensitive.)

Input Overvoltage Protection Devices

This information applies to all Series 90-30 power supplies except IC693PWR322

and IC693PWR328. The overvoltage protection devices for this power supply are

connected internally to pin 4 on the user terminal strip. This pin is normally connected to

frame ground (pin 3) with the supplied jumper strap which is installed at the factory. If

overvoltage protection is not required or is supplied upstream, this feature can be disabled

by removing the jumper strap from pins 3 and 4.

GFK-0356Q

Chapter 4 Power Supplies

4-5

If you want to Hi-pot test this supply, overvoltage protection must be disabled during the

test by removing the terminal strip jumper strap. Re-enable overvoltage protection after

testing by reinstalling the strap.

Frame Ground

Jumper Strap Connects

Overvoltage Protection

Devices to Frame Ground

Screw Terminals

on Terminal Board

Figure 4-3. Overvoltage Protection Devices and Jumper Strap

Isolated 24 VDC Supply Output Connections

The bottom two terminals of the power supply terminal strip provide connections to the

Isolated +24 volt DC output which can be used to provide power for external circuits

(within power limitations of the supply).

Caution

If the Isolated 24 VDC supply is overloaded or shorted, the

Programmable Logic Controller will stop operation.

4-6

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

GFK-0356Q

DC Input Only Power Supplies

IC693PWR322 Standard Power Supply, 24/48 VDC Input

The IC693PWR322 is a 30 watt output power supply designed for 24 VDC or 48 VDC nominal

inputs. It will accept an input voltage range from 18 VDC to 56 VDC. Although it is capable of

maintaining all outputs within specifications with input voltages as low as 18 VDC, it will not start

with initial input voltages of less than 21 VDC. This power supply provides the following outputs:

■

+5 VDC output.

■

+24 VDC Relay power output which provides power to circuits on Series 90-30 Output Relay

modules.

■ Isolated +24VDC, which is used internally by some modules, can also be used to provide

external power for 24VDC Input modules.

The load capacity for each output of this power supply is shown in the following table.

Table 4-6. IC693PWR322 Power Supply Capacities

Catalog

Load

Number

Capacity

Input

Output Capacities (Voltage/Power *)

IC693PWR322

30 Watts

24 or 48 VDC

+5 VDC

+24 VDC Isolated 20

+24 VDC Relay 15

15 watts

watts

* Total of all outputs combined cannot exceed 30 watts.

PWR

IC693PWR322

GE Fanuc

SYSTEM

STATUS

Series 90-30

RUN

INDICATORS

BATT

PROGRAMMABLE

CONTROLLER

STANDARD

POWER SUPPLY

PROGRAMMABLE CONTROLLER

INPUT

CONNECTIONS

FOR

24/48 VDC

DC POWER

50 WATT

SOURCE

INTERNAL POWER

SOURCE FOR

MODULES REQUIRING

24 VDC

24VDC

OUTPUT

0.8A MAX.

RS-485

COMPATIBLE

SERIAL PORT

BATTERY

CONNECTORS

LITHIUM

BACK-UP

BATTERY

Figure 4-4. Series 90-30 24/48 VDC Input Power Supply - IC693PWR322

GFK-0356Q

Chapter 4 Power Supplies

4-7

Table 4-7. Specifications for IC693PWR322 Power Supply

Nominal Rated Voltage

24 or 48 VDC

Input Voltage Range

Start

21 to 56 VDC

Run

18 to 56 VDC

Input Power

50 watts maximum at full load

Inrush Current

4A peak, 100 ms maximum

Output Power

5 VDC: 15 watts maximum

24 VDC Relay: 15 watts maximum

24 VDC Isolated: 20 watts maximum

NOTE: 30 watts maximum total (all three outputs)

Output Voltage

5 VDC: 5.0 VDC to 5.2 VDC (5.1 VDC nominal)

24 VDC Relay:

24 to 28 VDC

24 VDC Isolated: 21.5 VDC to 28 VDC

Protective Limits

Overvoltage:

5 VDC output: 6.4 to 7 V

Overcurrent;

5 VDC output: 4 A maximum

Holdup Time:

14 ms minimum

Standards

Refer to data sheet, GFK-0867B, or later version for

product standards, and general specifications.

Calculating Input Power Requirements for IC693PWR322

The following graph is a typical 24/48 VDC power supply efficiency curve. A basic procedure for

determining efficiency of the 24/48 VDC power supply follows the figure.

45W

AVERAGE

INPUT

POWER

(WATTS)

TOTAL OUTPUT POWER (WATTS)

Figure 4-5. Typical Efficiency Curve for 24/48 VDC Power Supply

Note

Start-up surge at full load is 4 amps for 250 milliseconds (maximum).

4-8

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

GFK-0356Q

IC693PWR328 Standard Power Supply, 48 VDC Input

The IC693PWR328 is a 30 watt output power supply designed for 48 VDC nominal input. It will

accept an input voltage range from 38 VDC to 56 VDC. This power supply provides the following

outputs:

■

+5 VDC output.

■

+24 VDC Relay power output which provides power to circuits on Series 90-30 Output Relay

modules.

■ Isolated +24 VDC, which is used internally by some modules, can also be used to provide

external power for 24 VDC Input modules.

The load capacity for each output of this power supply is shown in the following table.

Table 4-8. IC693PWR328 Power Supply Capacities

Catalog

Load

Number

Capacity

Input

Output Capacities (Voltage/Power *)

IC693PWR328

30 Watts

48 VDC

+5 VDC

+24 VDC Isolated 20

+24 VDC Relay 15

15 watts

watts

* Total of all outputs combined cannot exceed 30 watts.

PWR

IC693PWR328

GE Fanuc

SYSTEM

STATUS

Series 90-30

RUN

INDICATORS

BATT

PROGRAMMABLE

CONTROLLER

STANDARD

POWER SUPPLY

PROGRAMABLE CONTROLLER

INPUT

CONNECTIONS

FOR

48 VDC

DC POWER

50 WATT

SOURCE

INTERNAL POWER

SOURCE FOR

MODULES REQUIRING

24 VDC

24VDC

OUTPUT

0.8A MAX.

RS-485

COMPATIBLE

SERIAL PORT

BATTERY

CONNECTORS

LITHIUM

BACK-UP

BATTERY

Figure 4-6. Series 90-30 48 VDC Input Power Supply - IC693PWR328

4-10

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

GFK-0356Q

Table 4-9. Specifications for IC693PWR328 Power Supply

Nominal Rated Voltage

48 VDC

Input Voltage Range

38 to 56 VDC

Input Power

50 watts maximum at full load

Inrush Current

4A peak, 100 ms maximum

Output Power

5 VDC: 15 watts maximum

24 VDC Relay: 15 watts maximum

24 VDC Isolated: 20 watts maximum

NOTE: 30 watts maximum total (all three outputs)

Output Voltage

5 VDC: 5.0 VDC to 5.2 VDC (5.1 VDC nominal)

24 VDC Relay: 24 to 28 VDC

24 VDC Isolated:

21.5 VDC to 28 VDC

Protective Limits

Overvoltage:

5 VDC output: 6.4 to 7 V

Overcurrent;

5 VDC output: 4 A maximum

Holdup Time:

14 ms minimum

Standards

Refer to data sheet, GFK-0867B, or later version for

product standards, and general specifications.

Calculating Input Power Requirements for IC693PWR328

The following graph is a typical 48 VDC power supply efficiency curve. A basic procedure for

determining efficiency of the 48 VDC power supply follows the figure.

45W

AVERAGE

INPUT

POWER

(WATTS)

TOTAL OUTPUT POWER (WATTS)

Figure 4-7. Typical Efficiency Curve for IC693PWR328 Power Supply

Note

Start-up surge at full load is 4 amps for 250 milliseconds (maximum).

GFK-0356Q

Chapter 4 Power Supplies

4-11

IC693PWR331 High Capacity Power Supply, 24 VDC Input

The Series 90-30 DC input High Capacity power supply (IC693PWR331) is a 30 watt wide range

supply designed for 24 VDC nominal inputs. For applications requiring greater +5V current

capacity than is available with the standard supply, this supply allows all 30 watts to be consumed

from the +5 V output. It will accept an input voltage range from 12 VDC to 30 VDC. Although it

is capable of maintaining all outputs within specifications with input voltages as low as 12 VDC, it

will not start with initial input voltages of less than 18 VDC. This power supply provides the

following outputs:

■

+5 VDC output.

■

+24 VDC Relay power output which provides power to circuits on Series 90-30 Output Relay

modules.

■ Isolated +24 VDC, which is used internally by some modules, can also be used to provide

external power for 24 VDC Input modules.

The load capacity for each output of this power supply is shown in the following table.

Table 4-10. IC693PWR331 Power Supply Capacities

Catalog

Load

Number

Capacity

Input

Output Capacities (Voltage/Power *)

IC693PWR331

30 Watts

12 to 30

+5 VDC

+24 VDC Isolated 20

+24 VDC Relay 15

VDC

30 watts

watts

* Total of all outputs combined cannot exceed 30 watts.

PWR

IC693PWR331

SYSTEM

GE Fanuc

STATUS

Series 90-30

RUN

INDICATORS

BATT

HIGH CAPACITY

POWER SUPPLY

PROGRAMMABL CONTROLLER

+ INPUT

24 VDC

50 WATT

CONNECTIONS FOR

DC POWER SOURCE

INTERNAL POWER SOURCE

24 VDC

MODULES REQUIRING 24VDC

OUTPUT

0.8A MAX.

RS-485

COMPATIBLE

SERIAL PORT

BATTERY

CONNECTORS

LITHIUM

BACK-UP

BATTERY

Figure 4-8. Series 90-30 24 VDC Input High Capacity Power Supply - IC693PWR331

GFK-0356Q

Chapter 4 Power Supplies

4-13

Table 4-11. Specifications for IC693PWR331 Power Supply

Nominal Rated Voltage

24 VDC

Input Voltage Range

Start

18 to 30 VDC

Run

12 to 30 VDC

Input Power

50 watts maximum at full load

Inrush Current

Output Power

5 VDC: 30 watts maximum **

24 VDC Relay: 15 watts maximum

24 VDC Isolated: 20 watts maximum

NOTE: 30 watts maximum total (all three outputs)

Output Voltage

5 VDC:

5.0 VDC to 5.2 VDC (5.1 VDC nominal)

24 VDC Relay: 19.2 to 28.8 VDC

24 VDC Isolated: 19.2 VDC to 28.8 VDC

Protective Limits

Overvoltage:

5 VDC output: 6.4 to 7 V

Overcurrent;

5 VDC output: 7 A maximum

Holdup Time:

10 ms minimum

Standards

Refer to data sheet, GFK-0867B, or later version for

product standards, and general specifications.

* Dependent on installation and power supply impedance characteristics.

** Derate per Figure 2-22 at ambient temperatures above 50°C (122°F).

Current Derating for Higher Temperatures

6.1

6.0

5.8

5.6

5.4

5.2

5 VDC

5.0

CURRENT

4.8

4.6

4.4

4.2

4.0

AMBIENT TEMPERATURE (°C)

Figure 4-9. 5 VDC Current Output Derating for Temperatures above 50°C (122°F)

4-14

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

GFK-0356Q

Calculating Input Power Requirements for IC693PWR331

Use the following procedure to determine input power requirements for the 24 VDC High Capacity

Power Supply:

■ Determine total output power load from typical specifications listed for

individual modules at the end of this chapter.

■ Multiply the output power by 1.5 to determine the input power value.

■ Divide the input power value by the operating source voltage to determine the

input current requirements

■ Use the lowest input voltage to determine the maximum input current

■ Allow for start-up surge current requirements

■ Allow margins (10% to 20%) for variations

Field Wiring Connections to the DC Input-Only Power Supplies

DC Power Source Connections

The + and - wires from the DC power source connect to the top two terminals on the

terminal strip. The + wire should be connected to the top terminal screw, and the - wire to

the second screw (counting from the top down). The ground connection connects to the

third screw. This connection scheme is clearly marked on the front of these power

supplies.

Isolated 24 VDC Supply Output Connections

The bottom two terminals of the power supply terminal strip provide connections to the

Isolated +24 volt DC output which can be used to provide power for external circuits

(within power limitations of the supply).

Caution

If the Isolated 24 VDC supply is overloaded or shorted, the

Programmable Logic Controller will stop operation.

GFK-0356Q

Chapter 4 Power Supplies

4-15

Common Series 90-30 Power Supply Features

Status Indicator Lights on all Power Supplies

Four LEDs are located on the upper right front of the power supply faceplate. The purpose of these

LEDs is as follows:

PWR

The top green LED, labeled PWR, provides an indication of the operating state of the

power supply. The LED is ON when the power supply has a correct source of power and

is operating properly, and OFF when a power supply fault occurs or power is not applied.

The second green LED, labeled OK, is steady ON if the PLC is operating properly, and

OFF if a problem is detected by the PLC.

RUN

The third green LED, labeled RUN, is steady ON when the PLC is in the RUN mode.

BATT

The bottom red LED, labeled BATT, will be ON if the memory backup battery voltage is

too low to maintain the memory under a loss of power condition; otherwise it remains

OFF. If this LED is ON, the Lithium battery must be replaced before removing power

from the rack, or PLC memory may be lost.

Input Overvoltage Protection Devices

This information applies to all Series 90-30 power supplies except IC693PWR322

and IC693PWR328. The overvoltage protection devices for this power supply are

connected internally to pin 4 on the user terminal strip. This pin is normally connected to

frame ground (pin 3) with the supplied jumper strap which is installed at the factory. If

overvoltage protection is not required or is supplied upstream, this feature can be disabled

by removing the jumper strap from pins 3 and 4.

If you want to Hi-pot test this supply, overvoltage protection must be disabled during the

test by removing the terminal strip jumper strap. Re-enable overvoltage protection after

testing by reinstalling the strap.

4-16

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

GFK-0356Q

Frame Ground

Jumper Strap Connects

Overvoltage Protection

Devices to Frame Ground

Screw Terminals

on Terminal Board

Figure 4-10. Overvoltage Protection Devices and Jumper Strap

Output Voltage Connections to Backplane (All Supplies)

The following figure illustrates how these three output voltages are connected internally to the

backplane on the baseplate. The voltage and power required by modules installed on the baseplate

is supplied through the baseplate connectors.

POWER SUPPLY

BACKPLANE

USE/COMMENTS

USED INTERNALLY ON ANALOG INPUT,

I 24V

ANALOG OUTPUT, AND DC INPUT MODULES.

ALSO AVAILABLE ON EXTERNAL

TERMINALS ON DC INPUT MODULES AND

ON FRONT OF POWER SUPPLY FOR

IGND

USER APPLICATIONS.

R24V

USED INTERNALLY ON

RELAY OUTPUTS

RGND

SINGLE

POINT

CONNECTION

P5V

USED INTERNALLY ON CPU,

INPUTS, OUTPUTS, ETC.

LGND

2 POINT

CONNECTION

FGND

EXTERNAL CONNECTION

TO EARTH GROUND.

Figure 4-11. Interconnection of Power Supplies

GFK-0356Q

Chapter 4 Power Supplies

4-17

Overcurrent Protection (all Supplies)

The 5V logic output is electronically limited to 3.5 amps (7 amps for high capacity supplies). An

overload (including short circuits) is sensed internally and causes the supply to shut down. The

supply will continually try to restart until the overload is removed. An internal fuse in the input

line is provided as a backup. The supply will usually shut down before the fuse blows. The fuse

also protects against internal supply faults.

Timing Diagram

The timing diagram below shows the relationship of the DC input to the DC outputs and to the

Power Supply OK signal (PSOK) generated by the power supply. When power is first applied, the

PSOK signal goes false. This line remains false for a minimum of 20 msec after the +5V bus is

within specifications, then it becomes true.

If input power is interrupted, the +5V bus will remain within specifications and PSOK will remain

true a minimum of 10 milliseconds. PSOK then goes false. The +5V bus will remain within

specifications for an additional 4 milliseconds minimum to allow an orderly shutdown of the

system.

INPUT

POWER

MOMENTARY

POWER

OFF

LOSS

VOLTAGE

OVERSHOOT

5% (MAX)

+5V OUTPUT

(5.1V TYP.)

97% (MIN)

HOLD

TIME*

TIME

20MS

10MS

(MIN)

4MS

(MIN)

PSOK

*HOLD-UP TIME:

20 ms, minimum for IC693PWR321/330

14 ms, minimum for IC693PWR322

10 ms, minimum for IC693PWR331/332

Figure 4-12. Timing Diagram for all Series 90-30 Power Supplies

4-18

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

GFK-0356Q

CPU Serial Port Connector on Power Supply (All Supplies)

A 15-pin D-type female connector, accessed by opening the hinged door on the right front of the

power supply, provides the connection to a CPU serial port which is used to connect to:

■ A programmer (usually a personal computer) running GE Fanuc PLC programming software.

■ The GE Fanuc Hand-Held Programmer.

■ Other serial devices.

a43832

RS-485

COMPATIBLE

SERIAL PORT

Figure 4-13. Serial Port Connector

■ The serial port connector is only functional in a power supply that is installed in a baseplate

that also contains the CPU. The serial port is not functional on a power supply that is installed

in an expansion or remote baseplate.

■ Any device connected to the serial port that uses +5 VDC power from the Series 90-30 power

supply must be included in the calculation for maximum power consumption (see “Power

Supply Loading Calculations” in Chapter 12).

CPU Serial Port Information

The serial port connector on the power supply accesses the CPU serial port, which is a feature of all

Series 90-30 CPUs. See Chapter 5, “CPUs” for information on this serial port.

GFK-0356Q

Chapter 4 Power Supplies

4-19

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.

BATTERY

CONNECTORS

LITHIUM

BACK-UP

BATTERY

Figure 4-14. 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.

Additional Battery Information

For additional information on the memory backup battery, see the chapter, “Memory Backup and

Backup Battery.”

4-20

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

GFK-0356Q

Chapter

CPUs

CPU Types for Series 90-30 PLCs

There are numerous CPU models available for the Series 90-30 PLC which differ in speed, I/O

capacity, size of user memory, and advanced features. This variety of models gives a system

designer considerable flexibility in choosing the one best suited to the system being designed.

There are two basic types of CPUs, Embedded and Modular. The embedded types fulfill the need

for a good low cost PLC, but lack the power, expandability, and versatility of the modular systems.

In the embedded types, the CPU is built into the baseplate. In the modular types, the CPU is

contained inside a plug-in module.

Embedded CPUs

The embedded CPUs are part of an embedded CPU baseplate. In these products, the CPU and

memory integrated circuit chips are soldered to the backplane board of the baseplate. This chapter

discusses the CPU features of these products. Details about the baseplate features are located in

Chapter 2. There are three different embedded CPUs: Model 311 (IC693CPU311), Model 313

(IC693CPU313), and Model 323 (IC693CPU323). The embedded CPUs have the following basic

features:

■ The CPU type cannot be changed. It is soldered to the backplane board in the baseplate.

■ They do not support the use of Expansion or Remote racks, so an embedded CPU baseplate

does not have an expansion connector like the modular baseplates do. This means that if you

have an application that requires more than 10 modules, you will have to use a modular CPU

system.

■ The models 311 and 313 are 5-slot baseplates, and the model 323 is a 10-slot baseplate. Since

they do not require a plug-in CPU module, all numbered slots, including Slot 1, can be used

for I/O or Option modules.

■ The memory back-up battery is located in the Power Supply module; so if the Power Supply is

unplugged from the baseplate, the battery will be disconnected from the memory circuits,

which are located on the backplane circuit board. However, the backplane circuit board

contains a high value capacitor, called a ”super capacitor,” that can store enough charge to

maintain the memory circuits for a short period of time if the Power Supply is removed or its

battery is disconnected. See the section “Super Capacitor Memory Backup” in Chapter 6.

■ These CPUs do not have a time-of-day (TOD) clock.

GFK-0356Q

5-1

a44563A

Replaceable System (firmware) PROM

Socket for Optional Program PROM

SYSTEM

PROGRA

PROM

PROGRAMMABL

CONTROLLER

Description Label

BASE 5-

Says "With CPU"

WITH CPU

CAUTION

NON-CPU SLOTS

USER

AND REGISTER

VALUES MAY BE

Memory Backup

LOST IF POWER

Warning Label

SUPPLY IS

REMOVED FOR

LONGER THAN

1 HOUR

POWER

I/O-1

I/O-2

I/O-3

I/O-4

I/O-5

SUPPLY

Figure 5-1. Models 311 and 313 (5-Slot) Embedded CPU Baseplates

Modular CPUs

The modular CPUs consist of a CPU, memory, and associated integrated circuit chips soldered to

circuit board which is mounted in a plug-in module. The modular CPUs include the model CPU331

and higher. The modular CPUs have the following basic features:

■ A CPU module must be installed in Slot 1 of a modular CPU baseplate. Slot 1 is a unique size

and type that only fits a CPU module (or special Option modules). Slot 1 is labeled CPU/1.

Details on modular CPU baseplates are located in Chapter 2.

■ Modular CPUs support expansion and remote baseplates, so A 25-pin D-type female

expansion connector is located at the right end of the CPU baseplate for connection to an

expansion or remote baseplate.

■ Since the CPU is modular, it can readily be replaced or changed to a different type if desired.

■ Only one CPU is allowed per system, and it must be mounted in a CPU baseplate. If more

than one baseplate is used in a system, the additional ones must be either expansion or remote

types that do not contain a CPU.

■ A modular CPU baseplate is always assigned, by default, Rack Number 0.

■ All have a time-of-day (TOD) clock.

5-2

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

GFK-0356Q

PROGRAMMABLE

CONTROLLER

BASE 5-SLOT

CAUTION

NON-CPU SLOTS

I/O Bus

Memory Backup

USER PROGRAMAND REGISTER

VALUES MAY BE

Expansion

Warning Label

LOST IF POWER

Connector

SUPPLY IS

REMOVED FOR

LONGER THAN

1 HOUR

I/O-2

I/O-3

I/O-4

I/O-5

PPLY

CPU/1

CPU Slot (Slot 1)

Figure 5-2. IC693CHS397 5-Slot Modular CPU Baseplate

General CPU Features

Microprocessor

The microprocessor type varies by the CPU model:

■

80188 microprocessor for CPU models 311/313/323/331

■

80C188XL microprocessor for CPU models 340/341

■

80386EX microprocessor for CPU models 350-364

■

586 microprocessor for CPU model 374

The microprocessor provides all fundamental sweep and operation control, and execution of all

non-boolean (as used here, the term boolean refers to discrete logic such as contacts and coils)

functions. Boolean functions in the modular CPUs are handled by a dedicated VLSI (Very Large

Scale Integration) Instruction Sequencer Coprocessor (ISCP). All Series 90-30 CPUs use RAM

working memory.

CPU Serial Port (Connector on Power Supply)

A 15-pin D-type female connector, accessed by opening the hinged door on the right front of the

power supply, provides the connection to a CPU serial port which is used to connect to:

■ a programmer (usually a personal computer) running GE Fanuc PLC programming software.

The IC690ACC901 Miniconverter/cable kit is a convenient way to access this port. See

Appendix D for details.

■ the IC693PRG300 GE Fanuc Hand-Held Programmer (CPU374 does not support the HHP.)

See Chapter 11 for details.

■ the IC200ACC003 EZ Program Store device. See GFK-1811 for details. (CPU374 only)

■ other serial devices.

GFK-0356Q

Chapter 5 CPUs

5-3

RS-485

COMPATIBLE

SERIAL PORT

Figure 5-3. CPU Serial Port Connector on Power Supply

■ This serial port is RS-485 compatible, and uses the GE Fanuc SNP (Series Ninety Protocol)

protocol (slave only). Breakfree SNP became the default protocol on all serial ports on the

Series 90-30 CPUs, starting with firmware release 9.00 for CPUs 350-364, and firmware

release 8.20 for CPUs 311-341. For details, see page 5-13.

■ The serial port connector is only functional in a power supply that is installed in a baseplate

that also contains the CPU. It is not functional on a power supply that is installed in an

expansion or remote baseplate.

■ Any device connected to the serial port that uses +5 VDC power from the Series 90-30 power

supply must be included in the calculation for maximum power consumption (see the heading

“Power Supply Loading Calculations” in Chapter 12).

■ All Series 90-30 CPUs have this serial port arrangement. The 351, 352, and 363 CPUs have

additional serial ports, described in a later section of this chapter.

Caution

Care must be taken that common mode voltage specifications are met for

connections to this serial port. Common mode conditions that exceed those

specified will result in errors in transmission and/or damage to Series 90

PLC components. Common mode specifications are discussed in

Appendix A. When the common mode voltage specification is exceeded, a

port isolator such as the GE Fanuc IC690ACC903 must be used. See

Appendix G for details on this port isolator.

Memory Volatility

The term volatility refers to the issue of whether or not a certain memory type retains or loses its

contents (data) when power is removed from it.

■ Volatile memory - memory that loses its contents when power is removed. RAM memory is

inherently volatile. Therefore, when the PLC is turned off, a backup battery is necessary if

data loss in RAM memory is to be prevented.

■ Non-volatile memory - memory that retains its contents when power is removed. The various

types of PROM (Programmable Read-Only Memory) memory are non-volatile.

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RAM Memory

Every Series 90-30 CPU uses RAM memory for its ”working memory.” The RAM chips used are

of the CMOS type. CMOS RAM is an acronym for Complimentary Metal-Oxide Semiconductor,

Random Access Memory. CMOS RAM is a relatively fast, low power memory that can be easily

examined (read) and changed (written to).

In the embedded CPU models, RAM memory is mounted on the backplane board. In the modular

CPU models, RAM memory is mounted inside the CPU module. A backup battery is usually used

to preserve the contents of RAM memory when power is off.

RAM Memory Backup/Backup Battery Information

Please see Chapter 6 for the following information:

■ RAM memory backup recommendations.

■ Backup battery information such as estimated life, replacing, determining battery age using

date codes, etc.

■ Running without a backup battery.

■ Low battery warning methods.

Programmable Read-Only Memory (PROM) Types

There are three types of PROM devices used in Series 90-30 CPUs:

EPROM: Erasable Programmable Read-Only Memory. It is a plug-in integrated circuit memory

device that can be erased with an ultraviolet light. EPROMs can be read when installed in the PLC,

however in order to write new data to them, they must be removed from the PLC and written to

using an external PROM burning device.

EEPROM: Electrically Erasable Programmable Read-Only Memory. It is a plug-in integrated

circuit memory device that can be erased and written to while installed in the PLC.

Flash Memory: A variation of the EEPROM type memory. It also is an integrated circuit device

that can be erased and written to while installed in the PLC. One advantage of CPUs having flash

memory storage of firmware, is that firmware can be updated by writing from a Personal Computer

through a PLC serial port to flash memory. No modules have to be removed for flash firmware

upgrade.

Uses of PROM devices in the 90-30 CPUs

PROM-type devices are used in two ways in the 90-30 CPUs:

■ To store CPU firmware

■ To store user data, which consists of program, configuration, and register data.

The following table shows the types of PROM devices each CPU uses.

GFK-0356Q

Chapter 5 CPUs

5-5

Table 5-1. CPU Firmware and PROM Configurations

Firmware

EPROM

EEPROM

Flash

CPU

(standard)

(for user memory)

CPU311

EPROM

Optional

N/A

CPU313

EPROM

Optional

N/A

CPU323

EPROM

Optional

N/A

CPU331

EPROM

Optional

N/A

CPU340

EPROM

N/A

Optional

CPU341

EPROM

*Optional

* Optional

*Optional

CPU350

Flash

N/A

Standard

CPU351

Flash

N/A

Standard

CPU352

Flash

N/A

Standard

CPU360

Flash

N/A

Standard

CPU363

Flash

N/A

Standard

CPU364

Flash

N/A

Standard

CPU374

Flash

N/A

Standard

* Early versions of the CPU341 support optional EPROM and optional

EEPROM only. Starting with hardware version IC693CPU341-J and Firmware

version 4.61, only optional Flash is supported.

CPU Firmware

The CPU firmware contains the basic operating instructions for the PLC. Firmware is developed

by a GE Fanuc product engineering group. It is stored in either EPROM or Flash memory,

depending on the particular CPU.

CPU Firmware Upgrade (Update)

From time to time, new firmware is released. A new firmware version may contain support for

new features or improvements to existing features. Once a new version of CPU firmware is

released, all new CPU modules will be sold with that version. The Technical Support section of

the GE Fanuc Web site lists CPU revision histories, matching version numbers to associated

features. See Chapter 13 for information on the GE Fanuc Web site. Users who could benefit from

a new firmware release may choose to upgrade their CPU by installing new firmware. Upgrades

come in two formats, depending on the type of CPU to be upgraded. The ”CPU Firmware and

PROM Configuration” table in this chapter shows which type of firmware storage device each CPU

has. The two types are:

■ EPROM - For CPUs with firmware stored in EPROM, the upgrade is done by replacing the

CPU’s EPROM chips(s). The upgrade kit contains new EPROM chip(s), update labels, and

installation instructions. To upgrade the EPROM in an embedded CPU system, the module in

slot 1 must be unplugged to gain access to the PROM socket on the baseplate. In the case of a

modular CPU, the CPU must be unplugged and disassembled.

■ Flash - For CPUs with firmware stored in Flash, the upgrade is done by copying a new

firmware file to the CPU’s Flash memory. An upgrade kit may be purchased from GE Fanuc.

The upgrade kit contains the necessary files, update labels, and instructions. This method does

not require disassembling the module. The file downloading is done either through the port on

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

GFK-0356Q

the power supply, or through a port on the front of the CPU module (if it has one). The

applicable method will be documented in your upgrade kit instructions. Downloadable

firmware upgrade files are also found in the Technical Support area of the GE Fanuc Web site.

See Chapter 13 for Web site information.

To order an upgrade kit, write down the full catalog number of your module from the module

identification label on the side of the module, determine your current firmware revision level, then

call your PLC distributor. If you are not sure what firmware version you currently have, see the

heading on the next page “Determining CPU Revision Levels (Versions).”

Flash Firmware Upgrade Procedure

The operating system firmware is updated by connecting a PC compatible computer to the

applicable PLC serial port and running the PC Loader software included with the firmware floppy

disk.

The computer used for this task should be an IBM AT compatible or better PC with a minimum

640K of RAM, one 3.5” or high density 5.25” floppy drive, MS-DOS version 3.3 or later, a hard

drive, and an RS-232 serial port. In addition, a miniconverter/serial cable is required. The following

miniconverter/serial cable kit is available:

■ IC690ACC901, Miniconverter Kit (RS-232/RS-485) with cable and 9-pin to 25-pin adapter.

(This product is documented in Appendix D.)

Determining CPU Revision Levels (Versions)

If you plan to make changes to your system, you will need to know if your CPU can support those

changes. The features and capabilities of your CPU are determined by its revision levels (hardware

and firmware). This section discusses methods that you can use to determine your CPU’s revision

levels and associated features and capabilities.

Direct Methods

■ Obtain the information from the Important Product Information (IPI) sheet that came with your

CPU. However, if your CPU firmware has been upgraded, the IPI will not indicate the current

revision level.

■ The surest way to determine a CPU’s firmware revision level is to read it from the CPU by

using your programmer. Your programmer must be connected to the PLC and be in Online or

Monitor mode, and the PLC must be powered up. For example, on the Logicmaster ”PLC

STATUS and CONTROL” screen is an item called ”SOFTWARE REVISION.” The data

displayed in that field (such as 6.04) is the firmware revision level. See the Logicmaster 90-30

Programming Software User’s Manual, GFK-0466 (or the user’s manual for the programming

software you use), for additional details.

Indirect Method

Check the catalog number printed on the module identification label on the side of the module.

On all Series 90-30 modules, this catalog number indicates the module’s revision level(s). For

some CPUs, the catalog number contains a single letter at the end to indicate the CPU’s overall

revision level. For example,

GFK-0356Q

Chapter 5 CPUs

5-7

IC693CPU341-J

This tells us that the module has a revision level J. Later CPU modules are produced with two

revision letters, such as:

IC693CPU351-EK

The first letter stands for the hardware revision level and the second for the firmware revision

level.

These letters can be cross-referenced to the firmware version. A revision history list for Series

90-30 products, including CPUs, can be found in the GE Fanuc web site technical support area

(www.gefanuc.com/support/ ) that cross-references revision letters, firmware versions, and

related features. Also, if you have access to the progression of IPIs that were issued for the

particular CPU (these are available on the GE Fanuc PLC InfoLink CD-ROM) you can find

the desired cross-reference. Of course, you can also contact your distributor or GE Fanuc for

help.

If your firmware has been upgraded in the past, a small label that comes in the upgrade kit

should be attached to the side of the module next to the module identification label to indicate

the current firmware revision level. However, the label could have been forgotten; so to be

sure, you may want to read the information from the CPU with a programmer as described in

the “Direct Method” above. On models with EPROM firmware, the firmware revision level

will also be printed on the EPROM.

EPROM and EEPROM User Program Storage Options

The Model 311, 313, 323, 331, and an earlier version of the Model 341 CPUs have a User PROM

option for storing user application programs, register data, and configuration data in non-volatile

memory. Application programs are usually developed in a CPU’s battery-backed RAM memory

and executed from this RAM memory. But, if additional program integrity, or operation of the

PLC without a battery is desired, an optional EEPROM or EPROM can be installed in a spare

socket (labeled PROGRAM PROM) on the embedded CPU baseplates or in a socket inside the

Model 331 CPU module (and inside the early versions of Model 341 CPU prior to hardware

version IC693CPU341-J and firmware release 4.61). The Model 331 CPU module (and the early

versions of Model 341) has a jumper labeled JP1 located next to the EEPROM/EPROM socket to

allow you to select either EEPROM or EPROM. These jumper positions are shown below.

Jumper

Selects

3 - 2

EEPROM

2 - 1

EPROM

Comparing EPROM and EEPROM Features

For one-time applications, an EEPROM is the more practical of the two. It can be created in the

PLC itself and doesn’t require any additional outside equipment. An EPROM is not as convenient

to create. It must be created outside the PLC using an EPROM burner. Because an EPROM is less

expensive than an EEPROM, if you need to reproduce multiple copies of a program to use on a

large number of identical controls, it may be cost effective to use EPROMs, especially if you

already have an EPROM burner.

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Procedure for Creating an EPROM

Install an EEPROM in the PROM socket of the PLC you will use to develop the application

program.

Develop and debug the program in RAM memory, then write it to the EEPROM.

Remove the EEPROM from the PLC and install it in the EPROM burner as a master to make

one or more EPROMs.

Install the blank EPROM in the EPROM burner and copy the program on the EEPROM to the

blank EPROM.

Install the EPROM in the PLC’s PROM socket, then copy its contents into RAM memory.

The EPROM then serves as an on-board backup to RAM memory.

Note: Your CPU can be configured to load the application program stored in the PROM device

automatically into RAM memory when the CPU is powered-up. See “Running Without a

Memory Backup Battery” in Chapter 6 for details.

Caution

If PROM is configured (on the CPU configuration screen) as the power-up

program source and a PROM device is not present in the PROM socket, or a

blank PROM is in the socket, on a power-up cycle, a blank program will be

copied into the CPU’s RAM memory and the program in RAM memory will

be lost. Always keep a backup copy of your current program files in case of

an emergency.

EEPROM and EPROM devices, listed in the following table, are available from GE Fanuc.

Table 5-2. EPROM and EEPROM Catalog Numbers

GE Fanuc

Third Party Source

Catalog Number

Description

Part Number

Vendor Part Number

IC693ACC305 (Qty 4)

28C256 EEPROM, 350ns

44A725999-000

XICOR X28C256P

XICOR X28C256P25

XICOR X28HC256P-15

IC693ACC306 (Qty 4)

32Kx8 UV EPROM, 150ns

44A723379-000

NEC PD27C256AD-15

Atmel AT27C256-15DC1

Toshiba TC57256AD-15

Hitachi HN27C256AG-15

AMD AM27C256-150DC

Intel

TD27C256A-1

Flash Memory

The Model 340, 341 (later versions), 350, 351, 352, 360, 363, 364, and 374 CPUs have Flash

memory for user program storage. (Note that versions of the Model 341 CPU prior to firmware

release 4.61 had EEPROM memory.) The Read/Write/Verify process for user programs is the

same for Flash memory as it is for EEPROM operations. Flash memory operations (Read, Write,

or Verify) are accessed from the Program Utilities Function menu or from another Program

Utilities screen in the Logicmaster 90-30/20/Micro programming software.

GFK-0356Q

Chapter 5 CPUs

5-9

Series 90-30 CPU Capacities

The following table describes the maximum capacities and operating features for the Series 90-30

PLC CPU models. For State Logic CPUs, see “System Specifications for Series 90-30 State Logic

CPUs” in Chapter 9.

Table 5-3. Series 90-30 CPU Capacities

CPU

Speed,

Input

Output

User Program

Floating

Model

(MHz)

Processor

Points

Memory

Point

(Maximum)

Math

CPU311

80188

160 ¹

1K (Bytes)

6K (Bytes)

CPU313

80188

160 ¹

2K (Bytes)

12K (Bytes)

CPU323

80188

320 ²

2K (Bytes)

12K (Bytes)

CPU331

80188

512

4K (Bytes)

16K (Bytes)

CPU340

80C188XL

512

19.9K (Bytes)

32K (Bytes)

CPU341

80C188XL

512

19.9K (Bytes)

80K (Bytes)

CPU350

80386EX

2048

19.9K (Bytes)

32K (Bytes)

yes

CPU351

80386EX

2048

Note 3

Note 4

yes

CPU352

80386EX

2048

Note 3

Note 4

yes⁵

CPU360

80386EX

2048

Note 3

Note 4

yes

CPU363

80386EX

2048

Note 3

Note 4

yes

CPU364

80386EX

2048

Note 3

Note 4

yes

CPU374

133

586

2048

Note 3

Note 4

yes⁵

Maximum of 160 combined I + O points.

Maximum of 320 combined I + O points.

Configurable from 128 to 32,640 words, in 128 word increments.

Depends on assigned values for configurable word memory (%R, %AQ, %AI). Maximum is 240K Bytes.

CPU352 and CPU374 have hardware-based floating point math. Other CPUs have firmware-based floating point math.

User Memory Addresses (References)

Data in the Series 90-30 PLC programs is referenced by its memory address. A reference indicates

the way that data is stored in the PLC. A reference specifies both a memory type and a precise

location (number) within that memory type. For example:

%I00001

specifies address 1 in input memory.

%R00256

specifies address 256 in register memory.

Difference Between a Memory Address and a Nickname

The % symbol is used to distinguish memory addresses from nicknames. For example, %I17 (or

%I000017) is a memory address. The similar term, I17 (it has no % sign), is viewed by the PLC as

a nickname and could be used with most memory addresses. For example, if you had a motor in

your plant called “Infeed No. 17,” and it was commonly referred to as ”I17” by the people in your

plant, you might wish to use I17 as the nickname for the output coil (%Q11) that turns on that

motor. You are allowed to do so because the PLC can distinguish between the nickname, I17 (your

nickname for memory address %Q11), and memory address %I17.

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User Memory Reference Types

The user references referred to in the following tables are explained in the Series 90-30 PLC CPU

Instruction Set Reference Manual, GFK-0467.

Table 5-4. Range and Size of User References for CPU Models 311-341

Reference (Memory) Type

Model 311/313/323

Model 331/340/341

Reference Range

Size

Reference Range

Size

User program logic

Not applicable

6K bytes

Not applicable

CPU331: 16K bytes

CPU340: 32K bytes

CPU341: 80K bytes

Discrete inputs

%I0001 - %I0320*

512 bits

%I0001 - %I0512

512 bits

Discrete outputs

%Q0001 - %Q0320*

512 bits

%Q0001 - %Q0512

512 bits

Discrete globals

%G0001 - %G1280

1280 bits

%G0001 - %G1280

1280 bits

Internal coils

%M0001 - %M1024

1024 bits

%M0001 - %M1024

1024 Bits

Temporary coils

%T0001 - %T0256

256 bits

%T0001 - %T0256

256 bits

System status references

%S0001 - %S0032

32 bits

%S0001 - %S0032

32 bits

%SA001 - %SA032

32 bits

%SA0001 - %SA0032

32 bits

%SB001 - %SB032

32 bits

%SB0001 - %SB0032

32 bits

%SC001 - %SC032

32 bits

%SC0001 - %SC0032

32 bits

System register references

%R0001 - %R0512 (311)

512 words

%R0001 - %R2048

2K words (331)

%R0001 - %R1024 (313)

1024 words

%R0001 - %R9999

9999 words (340/341)

Analog inputs

%AI001 - %AI064

64 words

%AI0001 - %AI0128

128 words (331)

%AI0001 - %AI1024

1024 words (340/341)

Analog outputs

%AQ001 - %AQ032

32 words

%AQ001 - %AQ064

64 words (331)

%AQ001 - %AQ256

256 words (340/341)

System registers**

%SR001 - %SR016

16 words

%SR001 - %SR016

16 words

160 physical I/O maximum with 16 point modules installed; 320 maximum with 32 point modules installed.

** May be viewed only with a Hand-Held Programmer (see the Hand-Held Programmer User’s Manual, GFK-0402) ; may not be

referenced in a user’s logic program.

GFK-0356Q

Chapter 5 CPUs

5-11

Table 5-5. Range and Size of User References for CPU Models 350 through 374

Reference Type

Model 350/351/352/360/363/364/374 CPU

Reference Range

Size

Maximum User memory*

Not applicable

240K Bytes, configurable

(CPU350: 32K Bytes, fixed)

Discrete inputs

%I0001 - %I2048

2048 bits

Discrete outputs

%Q0001 - %Q2048

2048 bits

Discrete globals

%G0001 - %G1280

1280 bits

Internal coils

%M0001 - %M4096

4096 bits

Temporary coils

%T0001 - %T0256

256 bits

System status references

%S0001 - %S0032

32 bits

%SA001 - %SA032

32 bits

%SB001 - %SB032

32 bits

%SC001 - %SC032

32 bits

System register references

%R0001 - %R32640*

128 - 32,640 words, configurable.

(CPU350: 9999 words, fixed,)

Analog inputs

%AI001- %AI32640*

128 - 32,640 words, configurable.

(CPU350: 2048 words, fixed)

Analog outputs

%AQ001-%AQ32640*

128 - 32,640 words, configurable.

(CPU350: 512 words, fixed)

System registers**

%SR001 - %SR028

28 words

* Depends on user-defined value(s) of configurable memory.

** May be viewed only with a Hand-Held Programmer (see the Hand-Held Programmer User’s

Manual, GFK-0402) ; may not be referenced in a user’s logic program.

Application Program Compatibility

Programs that have been developed on Series 90-30 CPUs 311-341 will automatically be

translated by the programming software when used on CPUs 350-374. Programs created or

translated for CPUs 350-374 will automatically be translated when used with CPUs 311-341;

however, be aware that some CPUs support features, such as floating-point math or larger memory

sizes, that are not supported by other CPUs. In those cases, attempting to load a program to a CPU

not supporting one or more of the programmed or configured features will result in an error.

However, in some cases it may be possible to edit the program and configuration to make them

compatible with the targeted CPU.

CPU Time-of-Day (TOD) Clock Accuracy

The accuracy of the Series 90-30 time-of-day clock is ?9 seconds per day across the rated

operating temperature range of 0-60°C. The accuracy is relatively stable at any fixed temperature.

For applications that require greater accuracy, the following suggestions are furnished:

■ For an installation where the temperature of the CPU is stable, measure the amount of time

drift for a 24 hour period, then program a “correction” factor into the ladder program to add or

subtract seconds periodically to keep the CPU time accurate. The instruction to use in this

case is Service Request #7, “Change/Read Time-of-Day Clock.” At the appropriate time, a

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Service Request would read the TOD clock, an ADD instruction would add the correction

value to it, and another Service Request would write the new value to the TOD clock. A

possible drawback to this method is that if you replace your CPU you will have to determine a

new correction factor. Also, this method is affected by temperature changes, so its success is

based on holding the CPU’s ambient temperature stable.

■ If more accuracy is needed, the PLC could be interfaced to a third party solution such as a

radio link or Global Positioning System (GPS) satellite system.

Breakfree SNP Protocol

Breakfree SNP became the default protocol on all serial ports on the Series 90-30 CPUs, starting

with Firmware Release 9.00 for CPUs 350-364, and Firmware Release 8.20 for CPUs 311-341.

The breakfree feature makes the protocol compatible with a wider variety of modems. This feature

is compatible with existing SNP master units such as computers running PLC programming

software, or PCM modules. In a few applications, primarily where a combination of multi-drop

SNP communications and very short PLC sweep times are used, users may desire, for performance

reasons, to disable breakfree SNP. Breakfree SNP can be disabled and re-enabled via

Communications Request instructions. The Series 90 PLC Serial Communications User’s Manual,

GFK-0582 documents these Communications Request instructions.

350-374 CPUs

The 350-374 group of CPUs was developed to meet the needs of customers requiring increased

memory size, faster processing speed, and additional features not available on the 311-341 CPUs.

Compatibility With Hand-Held Programmer (HHP) and Memory Card

■ The user program in CPUs 350—374 cannot be viewed or edited with the Series 90-30 Hand-

Held Programmer (IC693PRG300). You must use one of the GE Fanuc programming

software packages to create or edit CPU 350—-374 user programs.

■ The Series 90 Memory Card (used on the Hand-Held Programmer) is not supported by CPUs

350—374.

■ The only operations supported by the HHP’s PROGRAM mode are writing to and reading from

the CPU’s flash memory.

■ Although the HHP’s CONFIG mode can be used to perform basic configuration of these

CPUs, it cannot handle specialized parameters such as those pertaining to the embedded

Ethernet Interface in the CPU364/374.

■ The HHP can be used to change the Time-of-Day Clock unless the Mem Protect configuration

parameter is set to Enabled and the keylock switch is in the ON (Protect) position.

■ The HHP can be used to edit data values in %R registers.

■ The HHP can be used to invoke or clear overrides on CPUs 350—364

■ The CPU374 does not support the HHP.

GFK-0356Q

Chapter 5 CPUs

5-13

350-374 CPU Advanced Features

Advanced

features of

350 - 374

CPUs

Feature

CPU350

CPU351

CPU352

CPU360

CPU363

CPU364

CPU374

Memory

32K

240K¹

fixed

Configurable

Serial Ports

Floating-

Yes¹

Yes

Yes¹

Point Math

(Firmware)

(Hardware)

(Firmware)

(Hardware)

Flash

Yes

Memory

Key Switch

Yes

Sequential

Yes¹

Event

Recorder

Embedded

Yes¹

Ethernet

Interface

¹ Denotes features supported in CPU firmware release 9.0 and later.

Details of 350 - 374 CPU Advanced Features

Upgrading Older CPUs

Older versions of the CPU firmware do not support some of the features in the table above (see

table footnote). These features may be added to older 350 - 360 CPUs by upgrading them to CPU

firmware version 9.0 or later. (The 363 and 364 CPUs were equipped with firmware version 9.0

when released as new products.) No hardware changes are required for this upgrade. For more

information on the subject of upgrading, see the heading “CPU Firmware Upgrades” earlier in this

chapter.

Memory/Configurable Memory

Starting with CPU firmware version 9.0, the 351-374 CPUs have 240K of user-configurable

memory. The CPU350 has 32K of fixed memory. The configurable memory feature lets you

specify the amount of %R, %AI, and %AQ word memory. Discrete memory (%I, %Q, %M, etc.)

sizes are not configurable. Word memory can be configured from 128 to 32,640 words in 128

word increments, which gives 255 possible sizes. The amount of memory available for a user

program depends on how much is configured for word memory.

Note: Configurable Memory has limited support in Logicmaster Version 9.02

and later (limited to 16K %R words, 8K %AI words, and 8K %AQ

words), and full support in Control (Version 2.2 and later), VersaPro (all

versions), and CIMPLICITY Machine Edition Logic Developer-PLC

(all versions).

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FANUC Series 90-30 PLC. Installation and Hardware Manual (GFK-0356Q) - page 4