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

Chapter

Maintenance and Troubleshooting

Troubleshooting Features of Series 90-30 Hardware

Indicator Lights (LEDs) and Terminal Board

The following figure shows how the indicator LEDs correspond to the circuit connection points on

an I/O Module’s terminal board. The terminal board terminals are numbered from the top, with the

top terminal in the left row being number 1 and the top terminal in the right row being number 2.

The numbers alternate between rows with even numbers on the right and odd numbers on the left,

as shown in the circuit diagram on the back of the hinged cover.

LED A6 corresponds to circuit A6:

A1 2 3 4 5 6 7 8

Fuse Indicator LED

B1 2 3 4 5 6 7 8

OUTPUT

RELAY

2 AMP

Circuit A6 connects

to terminal 8

Hinged Cover

Indicates External

Power Supply

44A726782-015

FOR USE WITH

IC693MDL940

Figure 13-1. Relationship of Indicator Lights to Terminal Board Connections

GFK-0356Q

13-1

Module LED Indicators

Input Module LED Indicators

When a discrete input device closes, the corresponding input LED should light to indicate that the

signal reached the module. If the light does not turn ON, a voltage check can be made on the

module’s terminal board or block:

■ If the correct voltage is present at the terminal, the corresponding input bit can be checked in

the PLC with your programming software. If the software shows that the input bit is at logic 1,

the module’s LED circuit is defective.

■ If the correct voltage level is not present at the terminal, a check can be made at the input field

device to determine if the device or interconnecting wiring is defective.

If none of an input module’s inputs are working, it may be that the external (field) input power

supply is defective, not powered up, or not connected properly. (Input and output devices are

powered from an external power supply, not from inside the module). Input modules are not fused,

so the Fuse Indicator LED in the previous figure does not apply to them.

Output Module LED Indicators

When a discrete output address (%Q) is turned on in the ladder program, the corresponding output

LED should light to indicate that the signal reached the module.

■ If the light does not turn ON, the module may be defective or the LED light may be bad.

■ If the light turns on but the output device doesn’t operate, a voltage check can be made on the

module’s terminal board or block. If the correct voltage level is present there, the output

device or wiring should be checked.

If none of an output module’s outputs are working, it may be that the external (field) output power

supply is defective, is not powered up or is not connected properly. (Input and output devices are

powered from an external power supply, not from inside the module). If the output module is a

type that has built-in fuses (some have electronic short circuit protection instead), the Fuse

Indicator LED (labeled “F”), shown in the previous figure, will light if a fuse blows.

Power Supply LED Indicators

The power supplies have four LED indicators. Their functions are explained in the “Power

Supplies” chapter.

CPU LED Indicators

There are several different LED arrangements on the various CPUs. These are explained in the

“CPUs” chapter.

Option Module LED Indicators

There are numerous LED arrangements on the various option modules. The “Option Modules”

chapter has some information on this subject. It also directs you, for each module, to further

information in the “Documentation” heading for each module. Also, Appendix G contains a

catalog number to documentation cross-reference.

13-2

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

GFK-0356Q

Maintenance and Troubleshooting

Troubleshooting Features of Programming Software

Detailed information about the following items are found in GFK-0467, Series 90-30/20/Micro

PLC CPU Instruction Set Reference Manual, and GFK-0466, Series 90-30/20/Micro Programming

Software User’s Manual.

Ladder Screens

Contacts, connections, and coils displayed on the ladder screens that are ON (passing power or

energized) are displayed in enhance brightness, allowing the tracing of signals through the

program. Addresses that refer to physical input (%I and %AI) and output signals (%Q and %AQ)

can be checked against module status lights, voltages, etc. to verify that the hardware is working

properly.

Configuration Screens

Normally, the following information is obtained from the system documentation. However, if they

are not available, the configuration screens can be used to determine:

• If the software configuration matches the actual hardware. Sometimes, while

troubleshooting, a module is installed in an incorrect slot by mistake. This will create a fault in

one of the two fault tables. The correct configuration can be determined from the

Configuration Screens.

• The memory addresses that a particular module is using.

Fault Tables

There are two fault tables, the “PLC Fault Table,” and the “I/O Fault Table.” The fault tables can

be viewed using the PLC programming software. These fault tables will not report such things as a

defective limit switch, but will identify system faults such as:

• Loss of or Missing Modules, System Configuration Mismatch.

• CPU hardware failure, Low Battery

• PLC Software Failure, Program Checksum Failure, No User Program, PLC Store Failures.

System Status References

These discrete references (%S, %SA, %SB, and %SC) can be viewed in the System Reference

(Status) Table, or on-screen if used in the ladder program, for determining the status of various

conditions and faults. For example, the %SC0009 bit turns on if a fault is logged in either fault

table. Another example is that bit %SA0011 will turn on if the CPU memory backup battery is low.

The Series 90-30 PLC CPU Instruction Set Reference Manual, GFK-0467, includes a “System

Status Reference Table.”

GFK-0356Q

Chapter 13 Maintenance and Troubleshooting

13-3

Reference Tables

There are two types of reference tables, standard and mixed. These tables show groups of memory

addresses and their status. For discrete addresses, the status of these will be shown as either logic 1

or logic 0. For analog and register addresses, values will be displayed. Standard tables display

only one type of memory address, such as all of the %I bits. Mixed reference tables are created by

the user, who selects what addresses to display in the tables. These mixed tables can contain

discrete, analog, and register references all in one table. This makes them useful for gathering

numerous related addresses on one screen where they can all be viewed or monitored at the same

time. This saves time compared with searching or scrolling through the ladder logic screens to find

these addresses.

Override feature

This feature must be used with caution to ensure the safety of personnel and equipment.

Normally, the machine should not be cycling, and all conditions should be such that the

output device can be turned on without any harm being done. This method can be used to

check an output circuit from the ladder screen all the way to the device being controlled. For

example, when overriding and toggling a %Q output to an ON state, the relay, solenoid, or other

device being controlled should turn on or pick up. If it does not, the status light on the output

module could be checked, then voltage checks could be made at the module terminal board, the

system terminal strip, the machinery terminal strip, the solenoid or relay connections, etc. until the

source of the fault is found.

Sequential Event Recorder (SER), DOIO functional instruction

These can be set up to capture the status of specified discrete addresses upon receiving a trigger

signal. They may be used to monitor and capture data about certain portions of the program, even

when unattended. They can be useful for locating the cause of an intermittent problem. For

example, a contact in a string of contacts that maintain power to a coil may, from time to time,

momentarily open and interrupt normal operation. However, when maintenance personnel attempt

to locate the problem, all of these contacts may test OK. By using the SER or DOIO instruction,

the status of all of these contacts can be captured within milliseconds of the time the fault occurs,

and the contact that opened will show a status of logic 0 at the moment of capture.

13-4

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

GFK-0356Q

Maintenance and Troubleshooting

Replacing Modules

Modules do not contain configuration switches. The slot in each baseplate (rack) is configured

(using the configuration software) to hold a particular module type (catalog number). This

configuration information is stored in CPU memory. Therefore, when replacing a module, you do

not have to make any hardware settings on the module itself. You do, however, have to ensure that

you install the correct module type in a particular slot.

Be aware that some “intelligent” modules, such as the CPU, PCM, APM, or DSM302, may contain

application programs that will need to be reloaded after the module is replaced. For such modules,

make sure that up-to-date copies of the application programs are maintained in case they have to be

restored later.

For I/O modules with terminal boards, you do not have to rewire a new terminal board in order to

replace the module. If the old terminal board is not defective, it can be removed from the old

module and reinstalled on the new module without removing any of the wiring. Procedures for

removing and installing modules and terminal boards are found in Chapter 2.

Series 90-30 Product Repair

The Series 90-30 products are, for the most part, not considered to be field-repairable. The one

major exception are the few modules that have replaceable fuses. The next section, “Module Fuse

List,” identifies these modules and their applicable fuses.

GE Fanuc offers a repair/product warranty service through your local distributor. Contact your

distributor for details.

GFK-0356Q

Chapter 13 Maintenance and Troubleshooting

13-5

Module Fuse List

Warning

Replace fuse only with the correct size and type. Using an incorrect fuse can

result in harm to personnel, damage to equipment, or both.

Table 13-1. Fuse List for Series 90-30 Modules

Module

Current

Quantity on

GE Fanuc Fuse

Third Party Sources

Catalog

Module Type

Rating

Module

Part Number

and Part Numbers

Number

IC693CPU364

CPU Module with

44A725214-001

Littlefuse - R454 001

embedded Ethernet

interface

IC693DVM300

Digital Valve Driver

N/A

Bussman - GDB-1A

N/A

Littlefuse - 239002

IC693MDL310

120 VAC, 0.5A

44A724627-111 (1)

Bussman - GMC-3

Littlefuse - 239003

IC693MDL330

120/240 VAC, 1A

44A724627-114 (1)

Bussman - GDC-5

Bussman S506-5

IC693MDL340

120 VAC, 0.5A

44A724627-111 (1)

Bussman - GMC-3

Littlefuse -

239003

IC693MDL390

120/240 VAC, 2A

44A724627-111 (1)

Bussman - GMC-3

Littlefuse -

239003

IC693MDL730

12/24 VDC Positive

259A9578P16 (1)

Bussman - AGC-5

Logic, 2A

Littlefuse - 312005

IC693MDL731

12/24 VDC Negative

259A9578P16 (1)

Bussman, AGC-5

Logic, 2A

Littlefuse - 312005

IC693PWR321

120/240 VAC or 125 VDC

44A724627-109 (2)

Bussman - 215-002

and

Input, 30 Watt Power

(GDC-2 or GMC-2)

IC693PWR330

Supply

Littlefuse - 239-002

IC693PWR322

24/48 VDC Input,

44A724627-114 (2)

Bussman - MDL-5

30 Watt Power Supply

Littlefuse - 313005

IC693PWR328

48 VDC Input

44A724627-114 (2)

Bussman - MDL-5

30 Watt Power Supply

Littlefuse - 313005

IC693PWR331

24 VDC Input,

44A724627-114 (2)

Bussman - MDL-5

30 Watt Power Supply

Littlefuse - 313005

IC693TCM302

Temperature Control

N/A

Littlefuse - 273002

Module

(1) Mounted in clip. Accessible by removing circuit board from module housing.

(2) Line fuse. Mounted in clip - accessible by removing module front.

13-6

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

GFK-0356Q

Maintenance and Troubleshooting

Spare/Replacement Parts

Two kits (IC693ACC319 and IC693ACC320) provide mechanical spare parts for Series 90-30

modules. One covers I/O CPU, PCM, and other modules; the other is for power supply modules.

These kits provide parts such as module levers, front covers, cases, etc. The following table

describes the contents of each kit.

Table 13-2. Spare/Replacement Parts

Spare Parts

Contents

IC693ACC319:

(qty. 10) I/O, CPU, PCM case lever

Spare parts kit for I/O, CPU,

(qty. 10) Spring pins cap

and PCM modules

(qty. 2) PCM module front cover

(qty. 2) PCM lens cap

(qty. 2) CPU module case

IC693ACC320:

(qty. 2) Power supply lever

Spare parts kit for power

(qty. 2) Spring pin for power supply lever

supplies

(qty. 2) Spring for power supply lever

(qty. 2) Power supply lens cap

(qty. 2) Power supply terminal cover

IC693ACC301 (see Note)

(qty. 2) Memory backup battery for CPU and PCM modules

Memory Backup Battery

Fuses

See “Fuse List For Series 90-30 Modules“ table in this chapter.

Modules

You may wish to maintain spare PLC modules. Many systems

have more than one of a particular catalog number, such as

power supplies (each rack has one) and I/O modules. In these

cases, one of each type would serve as backups for several

modules.

IC693ACC311

(qty. 6) Removable terminal boards used on many I/O

Removable Module Terminal

modules and some Option modules.

Board

44A736756-G01

Kit contains three sets (6 keys). Same key fits all applicable

CPU (CPU350 - 364) Key Kit

CPUs.

Note: The IC693ACC301 batteries have a shelf life of 5 years (see Chapter 6 for instructions on how to read battery

date codes). Periodically, outdated batteries should be removed from stock and disposed of according to the battery

manufacturer’s recommendations.

GFK-0356Q

Chapter 13 Maintenance and Troubleshooting

13-7

Preventive Maintenance Suggestions

Series 90-30 PLC Preventive Maintenance

Item

Description

Recommendation

No.

Safety ground and

Check frequently to ensure that safety ground connections are secure and

electrical system

that electrical cables and conduits are secure and in good condition.

CPU Memory backup

Replace annually or as appropriate for your application.* Check Chapter

battery

5 for instructions on how to avoid loss of memory contents when

replacing battery.

Option Module

Replace annually. Check user’s manual for additional instructions.

backup battery

Check Chapter 5 for instructions on how to avoid loss of memory

contents when replacing battery.

Ventilation

If using ventilation fan in enclosure, check for proper operation. Keep

fingers and tools away from moving fans. Clean or replace ventilation

air filter, if using one, at least monthly.

Mechanical tightness

With power OFF, check that connectors and modules are seated securely

in their sockets and that wire connections are secure. For low vibration

installations, perform annually. For high vibration installations, check at

least quarterly.

Enclosure

Check annually. With power OFF, remove manuals, prints, or other

loose material that could cause shorts or ventilation blockage, or that are

flammable, from inside of enclosure. Gently vacuum dust and dirt that

has collected on components. Use vacuum cleaner, not compressed air,

for this task.

Program backup

Do this initially after creating any application programs, such as the

ladder logic program, motion programs, etc. Then, any time a change is

made to a program, make at least one (several is better) new backup

copy. Keep old copies (clearly marked) for a reasonable period of time

in case you need to go back to the old design.

Document each backup copy as to what equipment it is for, date it was

created or modified, version number (if any), and author’s name.

Keep master backup copies in a safe place. Make working copies

available to those responsible for maintaining the equipment.

*See “Factors Affecting Battery Life” in Chapter 5.

13-8

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

GFK-0356Q

Maintenance and Troubleshooting

Getting Additional Help and Information

There are several ways to get additional help and information:

GE Fanuc Web Site

There is a large amount of information on the Technical Support section of the GE Fanuc Web site.

Sections such as Technical Documentation, Application Notes, Revision Histories, Frequently

Asked Questions, and Field Service Bulletins may have the exact information you need. You can

access this site at:

http://www.gefanuc.com/support/

Fax Link System

This system lets you choose technical help documents to be sent to you on your Fax machine. To

use this system follow these steps:

• Call Fax Link at (804) 978-5824 on a touch tone type phone (rotary dial phones will not work

for this application).

• Follow the instructions to have a master list (called “Document 1”) of Fax Link documents

Faxed to you. A master Fax Link list is also available on the GE Fanuc Web site in the

Technical Support section (see the “GE Fanuc Web Site” section above).

• Select desired document(s) from the master list, then call Fax Link and specify the document

number(s) you want to be Faxed to you. Up to three documents can be ordered per call.

GE Fanuc Telephone Numbers

If you need to speak with a GE Fanuc technical help person, use the applicable telephone number

from the following list.

Location

Telephone Number

North America, Canada, Mexico (Technical Support Hotline)

Toll Free:

800 GE Fanuc

Direct Dial: 804 978-6036

Latin America (for Mexico, see above)

Direct Dial: 804 978-6036

France, Germany, Luxembourg, Switzerland, and United Kingdom

Toll Free:

00800 433 268 23

Italy

Toll Free:

16 77 80 596

Other European Countries

+352 727 979 309

Asia / Pacific - Singapore

65 566 4918

India

91 80 552 0107

GFK-0356Q

Chapter 13 Maintenance and Troubleshooting

13-9

Appendix

Serial Ports and Cables

This appendix describes the serial port, converter, and cables used to connect Series 90 PLCs for

Series 90 Protocol (SNP). This information is included for reference and for those users who have

applications that require cable lengths different than the factory-supplied cables.

This appendix contains the following information:

■ Communications Interface

■ Cable and Connector Specifications

■ Serial Port Configuration

■ RS-232/RS-485 Converter (Catalog No. IC690ACC900)

■ Serial Cable Diagrams

Point-to-Point Connection

Multidrop Connection

RS-422 Interface

The Series 90 PLC family of products are compatible with EIA RS-422 specifications. RS-422

drivers and receivers are utilized to accomplish communications between several system

components using multiple driver/receiver combinations on a single cable with five twisted pairs.

The cable length between master and any slave cannot exceed 4,000 (1,219 meters) feet.

A multi-drop system of eight drivers and receivers can be configured. The maximum common

mode voltage between each additional drop is the RS-422 standard of +7 Volts to -7 Volts. The

driver output must be capable of 2 V minimum into 100 ohms. The driver output impedance must

be at least 120 K ohms in the high impedance state. The receiver input resistance is 12 K ohms or

greater. Receiver sensitivity is 200 millivolt.

Caution

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

Common mode conditions that exceed those specified will result in errors in

transmission and/or damage to Series 90 PLC components. When the

common mode voltage specification is exceeded, a port isolator such as the

IC690ACC903 must be used. See Appendix E for details on this port

isolator.

GFK-0356Q

A-1

Cable and Connector Specifications

The cable assembly presents one of the most common causes of communication failure. For best

performance construct the cable assemblies according to the recommended connector parts and

specifications.

Table A-1. Connector/Cable Specifications

Item

Description

Series 90 PLC: Serial (RS-422) port with metric hardware

Connector: 15-pin male, D-Subminiature Type, Cannon DA15S (solder pot) Hood: AMP

207470-1 connector shell

Hardware Kit: AMP 207871-1 Kit includes 2 metric screws and 2 screw clips

Workmaster II: Serial (RS-232) port with standard RS-232 connector

Mating

Connector: 25-pin female, D-Subminiature Type, Cannon DB25S (solder pot) with

Connectors:

DB110963-3 hood or equivalent (standard RS-232 connector)

Workmaster: Serial (RS-232) port with standard RS-232 connector

Connector: 9-pin female, D-Subminiature Type, Cannon DE9S (solder pot) with DE110963-1

hood or equivalent (standard RS-232 connector)

IBM-AT/XT: Serial (RS-232) port with standard RS-232 connector

Connector: 9-pin female, D-Subminiature Type, Cannon DE9S (solder pot) with DE110963-31

hood or equivalent (standard RS-232 connector)

RS-232/RS-485 Converter: one 15-pin male, and one 25-pin male

connector

15-pin male connector requires metric hardware (same connector, hood, and hardware as for

Series 90 PLC listed above)

25-pin male D-Subminiature Type, Cannon DA25S (solder pot) with DB110963-3 hood or

equivalent (standard RS-232 connector)

Computer grade, 24 AWG (.22 mm²), minimum with overall shield

Catalog Numbers: Belden 9505, Belden 9306, Belden 9832

Cable:

These cables provide acceptable operation for data rates up to 19.2 Kbps

as follows:

RS-232: 50 feet (15 meters) maximum cable length

RS-422/RS-422:

4000 feet (1200 meters) maximum length. Must not

exceed the maximum RS-422 Common Mode specifi-

cation of +7V to -7V. Isolation at the remote end may

be used to reduce or eliminate Common Mode voltages.

For distances under 50 feet (15 meters), almost any twisted pair or shielded twisted pair cable

will work, as long as the wire pairs are connected correctly.

When using RS-422/RS-422, the twisted pairs should be matched so that both transmit signals

make up one twisted pair and both receive signals make up the other twisted pair. If this is

ignored, cross-task resulting from the mismatching will affect the performance of the

communications system.

When routing communication cables outdoors, transient suppression devices can be used to

reduce the possibility of damage due to lightning or static discharge.

Care should be exercised that all connected devices are grounded to a common point.

Failure to do so could result in damage to the equipment.

A-2

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

GFK-0356Q

Serial Ports and Cables

Series 90 PLC Serial Port

The Series 90 PLC serial port is compatible with RS-422. An RS-232 to RS-422 converter is

required to interface to systems that provide RS-232 compatible interfaces. The Series 90 PLC

RS-422 serial port provides the physical connection for SNP communication. This port is a 15-pin

D-type female connector located as follows:

■ Series 90-70 PLC and Series 90-20 - CPU Module

■ Series 90-30 PLC - Power Supply

Figure A-1 shows the serial port orientation and connector layout for the Series 90 PLC types.

(The orientation of the connector on the Series 90-20 CPU is rotated 90 degrees from the Series

90-30 connector with pin 1 to the upper right.) Table A-2 shows the pin numbering and signal

assignment applicable to both PLCs.

SERIES 90-70 PLC

SERIES 90-30 PLC

NOTE

SERIES 90 PLC CONNECTORS

USE METRIC HARDWARE.

(SEE CONNECTOR SPECIFICATIONS)

Figure A-1. Series 90 PLC, RS-422 Serial Port Connector Configuration

GFK-0356Q

Appendix A Serial Ports and Cables

A-3

Table A-2. Series 90 PLC, RS-422 Serial Port Pin-out

Pin Number

Signal Name

Description

Shield

No Connection

ATCH *

Hand-Held Programmer attach signal

+5V *

+5V Power for: HHP and RS-232/485 Converter

RTS (A)

Request To Send

Signal Ground

Signal Ground, OV

CTS (B’)

Clear To Send

RT *

Terminating Resistor for RD **

RD (A’)

Receive Data

RD (B’)

Receive Data

SD (A)

Send Data

SD (B)

Send Data

RTS (B)

Request To Send

CTS (A’)

Clear To Send

* Signals available at the Connector but are not included in the RS-422 specification.

SD (Send Data) and RD (Receive Data) are the same as TXD and RXD (used in the Series Six

PLC).

(A) and (B) are the same as - and +. A and B denote outputs, and A’ and B’ denote inputs.

** Termination resistance for the Receive Data (RD) signal needs to be connected only on units at the

end of the lines. This termination is made on the Series 90 PLC products by connecting a jumper

between pins 9 and 10 inside the 15-pin D-shell with the following exception

For Series 90-70 PLCs with Catalog Numbers IC697CPU731J, and IC697CPU771G and earlier the

termination for RD at the PLC is implemented by a jumper between pins 9 and 11.

Workmaster Serial Port

The Workmaster II industrial computer, RS-232 serial port is a 25-pin D-type male connector, and

the early model Workmaster is a 9-pin male connector.

Figure A-2 shows the serial port connector layout for both computers. Table A-3 shows the pin

numbering and signal assignment for both connector types.

a44522

WORKMASTER II

WORKMASTER

(EARLY MODEL)

Figure A-2. Workmaster RS-232 Serial Port Connector Configuration

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

GFK-0356Q

Serial Ports and Cables

Table A-3. Workmaster RS-232 Serial Port Pins-out

Workmaster II (25-pin connector)

Workmaster (9-pin connector)

Pin No.

Signal

Description

Pin No.

Signal

Description

Transmit Data

Receive Data

RTS

Request to Send

RTS

Request to Send

CTS

Clear to Send

CTS

Clear to Send

GND

Signal Ground

GND

Signal Ground, 0V

DCD

Data Carrier Detect

DCD

Data Carrier Detect

9,10

DTR

Data Terminal Ready

Tied to line 20

NC = Not Connected

12-19

DTR

Data Terminal Ready

Ring Indicate

23-25

For more information about the Workmaster industrial computer serial port refer to the following

manuals:

GFK-0401 Workmaster II PLC Programming Unit Guide to Operation

GEK-25373 Workmaster Programmable Control Information Center Guide to Operation

IBM-AT/XT Serial Port

The IBM-AT, IBM-XT or compatible computer’s RS-232 serial port is a 9-pin D-type male

connector as shown in the figure below.

a44523

IBM-AT/XT

Figure A-3. IBM-AT/XT Serial Port

GFK-0356Q

Appendix A Serial Ports and Cables

A-5

Serial Ports and Cables

RS-232/RS-485 Converter

IC690ACC901 Miniconverter Kit

This kit consists of an RS-422 to RS-232 miniconverter, a 6 foot (2 meter) serial cable, and a 9-pin

to 25-pin serial port converter plug. This miniconverter is documented in Appendix D. This

miniconverter has replaced the older, larger, obsolete IC690ACC900 converter.

IC690ACC900 Obsolete Converter

The obsolete RS-232/RS-485 Converter (IC690ACC900) converts from RS-232 to RS-422/RS-485

communications. The converter has one 15-pin female D-type port, and one 25-pin female D-type

port.

This converter is no longer available. Please substitute the IC690ACC901 miniconverter.

Information about this converter is included in this manual for reference and troubleshooting

purposes.

For detailed information on the converter, refer to Appendix D. Examples of serial cable diagrams,

which include the converter, are provided in the remainder of this appendix..

GFK-0356Q

Appendix A Serial Ports and Cables

A-7

Serial Cable Diagrams

This section describes only a few of the many and various Point-to-Point, and Multidrop serial port

connections for Series 90 PLCs.

In the point-to-point configuration only two devices can be connected to the same communication

line. The communication line can be directly connected using RS-232 (50 feet, 15 meters

maximum) or RS-485 (4000 feet, 1200 meters maximum). Modems can be used for longer

distances.

Note

The cable connector for the Series 90-70 and Series 90-30 PLCs serial port must

be a right angle connector in order for the hinged door on the module to close

properly. Refer to Table A-1 Connector/Cable Specification.

RS-232 Point-to-Point Connections

The next three figures illustrate typical RS-232 point-to-point connection to Series 90 PLCs.

IC690CBL705 OR EQUIVALENT

RS-232/RS-485

RS-422

RS-232

CONVERTER

TWISTED SHIELDED

a44506

SHIELDED PAIRS

(IC690ACC900)

PAIRS

DCD ( B )

DCD ( A )

SD ( A )

RTS

CTS

RD ( B' )

SD ( B )

CTS

RTS

RD ( A' )

DCD

SD ( B )

RD ( B ' )

SERIES

DTR

GND

SD ( A )

90 PLC

WORKMASTER

GND

SHLD

RTS ( B )

RS-422

CTS ( B' ) 15

RTS ( A )

PORT

RS-232

CTS ( A' )

PORT

RTS ( A )

CTS ( B' )

RTS ( B ) 14

+5V

SHLD

25-PIN

15-PIN

15- PIN

MALE

FEMALE

MALE

FEMALE FEMALE

MALE

FEMALE

RS-232

RS-485

PORT

POWER SOURCE FOR POINT-TO-POINT CONNECTION 10 FEET (3 METERS) ONLY. CONVERTER POWER SOURCE BEYOND 10 FEET (3 METERS) AND FOR MULTIDROP

CONNECTION MUST BE EXTERNAL SOURCE.

TERMINATION RESISTANCE FOR THE RECEIVE DATA (RD) SIGNAL NEEDS TO BE CONNECTED ONLY ON UNITS AT THE END OF THE LINES. THIS TERMINATION IS MADE ON

THE SERIES 90 PLC PRODUCTS BY CONNECTING A JUMPER BETWEEN PIN 9 AND PIN 10 INSIDE THE 15-PIN D-SHELL WITH THE FOLLOWING EXCEPTION. FOR SERIES

90-70 PLCs, CATALOG NUMBERS IC697CPU731 AND IC697CPU771, THE TERMINATION FOR RD AT THE PLC IS IMPLEMENTED BY A JUMPER BETWEEN PIN 9 AND PIN 11.

A-8

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

GFK-0356Q

Serial Ports and Cables

IC690CBL702 OR EQUIVALENT

RS-232/RS-422

RS-422

RS-232

CONVERTER

TWISTED SHIELDED

a44507

SHIELDED PAIRS

(IC690ACC900)

PAIRS

DCD ( A )

IBM-AT

DCD ( B )

SD ( A )

(COMPATIBLE)

RTS

CTS

RD ( A' )

SD ( B )

CTS

DTR

RD ( B' )

RD ( A' )

DCD

SD ( A )

RD ( B )

RS-232

DTR

GND

SD ( B )

SERIES

PORT

GND

SHLD

RTS ( A )

90 PLC

CTS ( A' )

RTS ( B )

RS-422

PORT

CTS ( B' )

CTS ( A' )

9-PIN

RTS ( A )

CTS ( B' )

MALE

FEMALE

RTS ( B )

+5V

SHLD

25-PIN

MALE

25-PIN

15-PIN

15- PIN

FEMALE FEMALE

MALE

FEMALE

RS-232

RS-422

PORT

POWER SOURCE FOR POINT-TO-POINT CONNECTION 10 FEET (3 METERS) ONLY. CONVERTER POWER SOURCE BEYOND 10 FEET (3 METERS) AND FOR MULTIDROP CONNECTION

MUST BE EXTERNAL SOURCE.

TERMINATION RESISTANCE FOR THE RECEIVE DATA (RD) SIGNAL NEEDS TO BE CONNECTED ONLY ON UNITS AT THE END OF THE LINES. THIS TERMINATION IS MADE ON THE

SERIES 90 PLC PRODUCTS BY CONNECTING A JUMPER BETWEEN PIN 9 AND PIN 10 INSIDE THE 15-PIN D-SHELL WITH THE FOLLOWING EXCEPTION. FOR SERIES 90-70 PLCs,

CATALOG NUMBERS IC697CPU731 AND IC697CPU771, THE TERMINATION FOR RD AT THE PLC IS IMPLEMENTED BY A JUMPER BETWEEN PIN 9 AND PIN 11.

Figure A-4. IBM-AT (compatibles) Personal Computer to Series 90 PLCs

IC690CBL701 OR EQUIVALENT

RS-232/RS-422

RS-422

a44508

RS-232

CONVERTER

TWISTED SHIELDED

SHIELDED PAIRS

(IC690ACC900)

PAIRS

DCD ( A )

SD ( A )

IBM-XT

DCD ( B )

SD ( B )

RTS

CTS

RD ( A' )

WORKMASTER

CTS

DTR

RD ( B' )

DCD

SD ( A )

DTR

GND

SD ( B )

RTS ( A )

SERIES

RS-232

GND

SHLD

RTS ( B )

90 PLC

PORT

CTS ( A' )

RS-422

PORT

CTS ( B' )

CTS ( B')

9-PIN

RTS ( A )

+5V

MALE

FEMALE

RTS ( B )

+5V

SHLD

25-PIN

MALE

25-PIN

15-PIN

15- PIN

FEMALE FEMALE

MALE

FEMALE

RS-232

RS-422

PORT

POWER SOURCE FOR POINT-TO-POINT CONNECTION 10 FEET (3 METERS) ONLY. CONVERTER POWER SOURCE BEYOND 10 FEET (3 METERS) AND FOR MULTIDROP

CONNECTION MUST BE EXTERNAL SOURCE.

TERMINATION RESISTANCE FOR THE RECEIVE DATA (RD) SIGNAL NEEDS TO BE CONNECTED ONLY ON UNITS AT THE END OF THE LINES. THIS TERMINATION IS MADE ON

THE SERIES 90 PLC PRODUCTS BY CONNECTING A JUMPER BETWEEN PIN 9 AND PIN 10 INSIDE THE 15-PIN D-SHELL WITH THE FOLLOWING EXCEPTION. FOR SERIES 90-70

PLCs, CATALOG NUMBERS IC697CPU731 AND IC697CPU771, THE TERMINATION FOR RD AT THE PLC IS IMPLEMENTED BY A JUMPER BETWEEN PIN 9 AND PIN 11.

Figure A-5. Workmaster or IBM-XT (compatibles) Personal Computer to Series 90 PLCs

GFK-0356Q

Appendix A Serial Ports and Cables

A-9

RS-422 Point-to-Point Connection

If your host device is equipped with a RS-422 card you can connect directly to Series 90 PLCs as

illustrated in Figure A-6.

HOST

PLC

COMPUTER

SHIELDED TWISTED PAIRS

RD (A')

SD ( A )

RD (B')

SD ( B )

RD ( A' )

SD (A)

RD ( B ' )

SD (B)

RTS ( A )

CTS (A')

RTS ( B )

CTS ( B' )

CTS (B')

CTS ( A' )

RTS (B')

GND

RTS (A)

SHLD

GND

SHLD

UP TO A MAXIMUM OF 50 FEET (15.2 METERS)

(WITHOUT ISOLATION)

* TERMINATION RESISTANCE FOR THE RECEIVE DATA (RD) SIGNAL NEEDS TO

CONNECTED ONLY ON UNITS AT THE END OF THE LINES. THIS TERMINATION IS

ON THE SERIES 90 PLC PRODUCTS BY CONNECTING A JUMPER BETWEEN PIN 9

PIN 10 INSIDE THE 15-PIN D-SHELL WITH THE FOLLOWING EXCEPTION. FOR

90-70 PLCs, CATALOG NUMBERS IC697CPU731 AND IC697CPU771, THE

FOR RD AT THE PLC IS IMPLEMENTED BY A JUMPER BETWEEN PIN 9 AND PIN

Figure A-6. Typical RS-422, Host to PLC Connection, with Handshaking

Multidrop Connections

In the multidrop configuration, the host device is configured as the master and one or more PLCs

are configured as slaves. This method can be used when the maximum distance between the master

and any slave does not exceed 4000 feet (1200 meters). This figure assumes good quality cables

and a moderately noisy environment. A maximum of 8 slaves can be connected using RS-422 in a

daisy chain or multidrop configuration. The RS-422 line must include handshaking and use wire

type as specified in the “Cable and Connector Specifications” section.

The following illustrations shows wiring diagrams and requirements for connecting a

Workmaster II or IBM-PS/2, Workmaster, IBM-AT/XT or compatible computer to Series 90 PLCs

in an 8-wire multidrop, serial data configuration.

A-10

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

GFK-0356Q

Serial Ports and Cables

IC690CBL705 OR EQUIVALENT

RS-232/RS-422

RS-422

RS-232 SHIELDED PAIRS

CONVERTER

MAKE CONNECTIONS

(IC690ACC900)

INSIDE D-CONNECTORS

SLAVE

STATION

DCD ( A )

SD ( A )

DCD ( B )

SD ( B )

RTS

CTS

RD ( A' )

CTS

DTR

RD ( B' )

SERIES

DCD

SD ( A )

90-70

DTR

GND

SD ( B )

RTS ( A )

CPU

WORKMASTER

GND

SHLD

RTS ( B )

RS-422

CTS ( A' )

PORT

RS-232

CTS ( B' )

PORT

RTS ( A )

+5V

RTS ( B )

+5V

SHLD

25- PIN

25-PIN

15-PIN

15- PIN

MALE

FEMALE

MALE

FEMALE

MALE

FEMALE

RS-232

RS-422

PORT

LAST

STATION

POWER

SD ( A )

NOTE

SOURCE

SD ( B )

WHEN WIRING RS-422 /485 MULTIDROP CABLES REFLECTIONS ON THE

FOR

RD ( A' )

TRANSMISSION LINE CAN BE REDUCED BY CONFIGURING THE CABLE IN A

CONVERTER

RD ( B' )

SERIES

DAISY

90-30

CHAIN FASHION AS SHOWN BELOW.

RTS ( A )

MASTER

CONVERTER

SLAVE STATION

LAST STATION

RTS ( B )

RS-422

CTS ( A' )

PORT

PLC 15-PIN CONNECTOR

CTS ( B' )

SERIES 90-30 LOCATED

+5V

ON POWER SUPPLY

SERIES 90-70 LOCATED

SHLD

ON THE CPU BOARD

ALSO IT IS RECOMMENDED TO MAKE ANY NECESSARY CONNECTIONS

INSIDE THE CABLE CONNECTOR TO BE MOUNTED ON THE PLC. IT IS

NOT RECOMMENDED TO USE TERMINAL STRIPS TO OTHER TYPES OF

CONNECTORS ALONG THE LENGTH OF THE TRANSMISSION LINE.

15- PIN

TO OTHER PLC's

MALE

FEMALE

* TERMINATION RESISTANCE FOR THE RECEIVE DATA (RD) SIGNAL NEEDS TO BE CONNECTED ONLY ON UNITS AT THE END OF THE LINES. THIS TERMINATION IS MADE

ON THE SERIES 90 PLC PRODUCTS BY CONNECTING A JUMPER BETWEEN PIN 9 AND PIN 10 INSIDE THE 15-PIN D-SHELL WITH THE FOLLOWING EXCEPTION. FOR SERIES

90-70 PLCs, CATALOG NUMBERS IC697CPU731 AND IC697CPU771, THE TERMINATION FOR RD AT THE PLC IS IMPLEMENTED BY A JUMPER BETWEEN PIN 9 AND PIN 11.

GROUND POTENTIAL: MULTIPLE UNITS, NOT CONNECTED TO THE SAME POWER SOURCE, MUST HAVE COMMON GROUND POTENTIALS OR GROUND ISOLATION FOR PROPER

OPERATION OF THIS SYSTEM.

Figure A-7. Workmaster II/Series 90 PLC Multidrop Connection

Note

The cable connector for the Series 90-70 serial port must be a right

angle

connector in order for the hinged door on the module to close properly. Refer to

Table A-1, “Connector/Cable Specification.”

GFK-0356Q

Appendix A Serial Ports and Cables

A-11

IC690CBL701 OR EQUIVALENT

RS-232/RS-422

RS-422

RS-232 SHIELDED PAIRS

CONVERTER

MAKE CONNECTIONS

(IC690ACC900)

INSIDE D-CONNECTORS

SLAVE

STATION

DCD ( A )

SD ( A )

DCD ( B )

SD ( B )

WORKMASTER

RTS

CTS

RD ( A' )

CTS

DTR

RD ( B' )

SERIES

DCD

SD ( A )

90-70

RS-232

DTR

GND

SD ( B )

RTS ( A )

CPU

PORT

GND

SHLD

RTS ( B )

RS-422

CTS ( A' )

PORT

CTS ( B' )

9- PIN

RTS ( A )

+5V

MALE

FEMALE

RTS ( B )

+5V

SHLD

25- PIN

25-PIN

15-PIN

15- PIN

MALE

FEMALE

MALE

FEMALE

RS-232

RS-422

PORT

LAST

STATION

POWER

NOTE

SOURCE

SD ( A )

WHEN WIRING RS-422 /485 MULTIDROP CABLES REFLECTIONS ON THE

FOR

SD ( B )

TRANSMISSION LINE CAN BE REDUCED BY CONFIGURING THE CABLE

CONVERTER

RD ( A' )

SERIES

IN A DAISY

CHAIN FASHION AS SHOWN BE

RD ( B' )

90-30

LOW.

RS-422

MASTER

CONVERTER

SLAVE STATION

LAST STATION

RTS ( A )

RTS ( B )

PORT

PLC 15-PIN CONNECTOR

CTS ( A' )

SERIES 90-30 LOCATED

CTS ( B' )

ON POWER SUPPLY

+5V

SERIES 90-70 LOCATED

ON THE CPU BOARD

SHLD

ALSO IT IS RECOMMENDED TO MAKE ANY NECESSARY CONNECTIONS

INSIDE THE CABLE CONNECTOR TO BE MOUNTED ON THE PLC. IT IS

NOT RECOMMENDED TO USE TERMINAL STRIPS TO OTHER TYPES OF

CONNECTORS ALONG THE LENGTH OF THE TRANSMISSION LINE.

15- PIN

TO OTHER PLC's

MALE

FEMALE

* TERMINATION RESISTANCE FOR THE RECEIVE DATA (RD) SIGNAL NEEDS TO BE CONNECTED ONLY ON UNITS AT THE END OF THE LINES. THIS TERMINATION IS MADE ON THE

SERIES 90 PLC PRODUCTS BY CONNECTING A JUMPER BETWEEN PIN 9 AND PIN 10 INSIDE THE 15-PIN D-SHELL WITH THE FOLLOWING EXCEPTION. FOR SERIES 90-70 PLCs,

CATALOG NUMBERS IC697CPU731 AND IC697CPU771, THE TERMINATION FOR RD AT THE PLC IS IMPLEMENTED BY A JUMPER BETWEEN PIN 9 AND PIN 11.

GROUND POTENTIAL: MULTIPLE UNITS, NOT CONNECTED TO THE SAME POWER SOURCE, MUST HAVE COMMON GROUND POTENTIALS OR GROUND ISOLATION FOR PROPER

OPERATION OF THIS SYSTEM.

Figure A-8. Workmaster/Series 90 PLC Multidrop Connection

IC690CBL702 OR EQUIVALENT

RS-232/RS-422

RS-422

RS-232 SHIELDED PAIRS

CONVERTER

MAKE CONNECTIONS

(IC690ACC900)

INSIDE D-CONNECTORS

SLAVE

STATION

DCD ( A )

SD ( A )

IBM-AT

DCD ( B )

SD ( B )

(COMPATIBLE)

RTS

CTS

RD ( A' )

CTS

DTR

RD ( B' )

SERIES

DCD

SD ( A )

90-70

RS-232

DTR

GND

SD ( B )

RTS ( A )

CPU

PORT

GND

SHLD

RTS ( B )

RS-422

CTS ( A' )

PORT

CTS ( B' )

9- PIN

RTS ( A )

+5V

MALE

FEMALE

RTS ( B )

+5V

SHLD

25- PIN

25-PIN

15-PIN

15- PIN

MALE

FEMALE

MALE

FEMALE

RS-232

RS-422

PORT

LAST

STATION

POWER

NOTE

SOURCE

SD ( A )

WHEN WIRING RS-422 /485 MULTIDROP CABLES REFLECTIONS ON THE

FOR

SD ( B )

RD ( A' )

SERIES

TRANSMISSION LINE CAN BE REDUCED BY CONFIGURING THE CABLE

CONVERTER

90-30

IN A DAISY

CHAIN FASHION AS SHOWN BE

RD ( B' )

LOW.

MASTER

CONVERTER

SLAVE STATION

LAST STATION

RTS ( A )

RS-422

RTS ( B )

PORT

PLC 15-PIN CONNECTOR

CTS ( A' )

SERIES 90-30 LOCATED

CTS ( B' )

ON POWER SUPPLY

+5V

SERIES 90-70 LOCATED

ON THE CPU BOARD

SHLD

ALSO IT IS RECOMMENDED TO MAKE ANY NECESSARY CONNECTIONS

INSIDE THE CABLE CONNECTOR TO BE MOUNTED ON THE PLC. IT IS

NOT RECOMMENDED TO USE TERMINAL STRIPS TO OTHER TYPES OF

CONNECTORS ALONG THE LENGTH OF THE TRANSMISSION LINE.

15- PIN

TO OTHER PLC's

MALE

FEMALE

* TERMINATION RESISTANCE FOR THE RECEIVE DATA (RD) SIGNAL NEEDS TO BE CONNECTED ONLY ON UNITS AT THE END OF THE LINES. THIS TERMINATION IS MADE ON THE

SERIES 90 PLC PRODUCTS BY CONNECTING A JUMPER BETWEEN PIN 9 AND PIN 10 INSIDE THE 15-PIN D-SHELL WITH THE FOLLOWING EXCEPTION. FOR SERIES 90-70 PLCs,

CATALOG NUMBERS IC697CPU731 AND IC697CPU771, THE TERMINATION FOR RD AT THE PLC IS IMPLEMENTED BY A JUMPER BETWEEN PIN 9 AND PIN 11.

GROUND POTENTIAL: MULTIPLE UNITS, NOT CONNECTED TO THE SAME POWER SOURCE, MUST HAVE COMMON GROUND POTENTIALS OR GROUND ISOLATION FOR PROPER

OPERATION OF THIS SYSTEM.

Figure A-9. IBM-AT/Series 90 PLC Multidrop Connection

A-12

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

GFK-0356Q

Serial Ports and Cables

IC690CBL701 OR EQUIVALENT

RS-232/RS-422

RS-422

RS-232 SHIELDED PAIRS

CONVERTER

MAKE CONNECTIONS

(IC690ACC900)

INSIDE D-CONNECTORS

SLAVE

STATION

DCD ( A )

SD ( A )

IBM-XT

DCD ( B )

SD ( B )

(COMPATIBLE)

RTS

CTS

RD ( A' )

CTS

DTR

RD ( B' )

SERIES

DCD

SD ( A )

90-70

RS-232

CPU

PORT

DTR

GND

SD ( B )

RTS ( A )

RS-422

GND

SHLD

RTS ( B )

CTS ( A' )

PORT

CTS ( B' )

9- PIN

RTS ( A )

+5V

MALE

FEMALE

RTS ( B )

+5V

SHLD

25- PIN

25-PIN

15-PIN

15- PIN

MALE

FEMALE

MALE

FEMALE

RS-232

RS-422

PORT

LAST

STATION

POWER

NOTE

SOURCE

SD ( A )

WHEN WIRING RS-422 /485 MULTIDROP CABLES REFLECTIONS ON THE

FOR

SD ( B )

RD ( A' )

SERIES

TRANSMISSION LINE CAN BE REDUCED BY CONFIGURING THE CABLE

CONVERTER

90-30

IN A DAISY

CHAIN FASHION AS SHOWN BE

RD ( B' )

LOW.

MASTER

CONVERTER

SLAVE STATION

LAST STATION

RTS ( A )

RS-422

RTS ( B )

PORT

PLC 15-PIN CONNECTOR

CTS ( A' )

SERIES 90-30 LOCATED

CTS ( B' )

ON POWER SUPPLY

+5V

SERIES 90-70 LOCATED

ON THE CPU BOARD

SHLD

ALSO IT IS RECOMMENDED TO MAKE ANY NECESSARY CONNECTIONS

INSIDE THE CABLE CONNECTOR TO BE MOUNTED ON THE PLC. IT IS

NOT RECOMMENDED TO USE TERMINAL STRIPS TO OTHER TYPES OF

CONNECTORS ALONG THE LENGTH OF THE TRANSMISSION LINE.

15- PIN

TO OTHER PLC's

MALE

FEMALE

* TERMINATION RESISTANCE FOR THE RECEIVE DATA (RD) SIGNAL NEEDS TO BE CONNECTED ONLY ON UNITS AT THE END OF THE LINES. THIS TERMINATION IS MADE ON THE

SERIES 90 PLC PRODUCTS BY CONNECTING A JUMPER BETWEEN PIN 9 AND PIN 10 INSIDE THE 15-PIN D-SHELL WITH THE FOLLOWING EXCEPTION. FOR SERIES 90-70 PLCs,

CATALOG NUMBERS IC697CPU731 AND IC697CPU771, THE TERMINATION FOR RD AT THE PLC IS IMPLEMENTED BY A JUMPER BETWEEN PIN 9 AND PIN 11.

GROUND POTENTIAL: MULTIPLE UNITS, NOT CONNECTED TO THE SAME POWER SOURCE, MUST HAVE COMMON GROUND POTENTIALS OR GROUND ISOLATION FOR PROPER

OPERATION OF THIS SYSTEM.

Figure A-10. IBM-XT/Series 90 PLC Multidrop Connection

GFK-0356Q

Appendix A Serial Ports and Cables

A-13

Appendix

IC690ACC900 Converter

Note: This product is no longer available. This appendix is for reference for those already using

this converter. We recommend the IC690ACC901 as a replacement for most applications

(see Appendix D for details).

This appendix provides a detailed description of the RS-422/RS-485 to RS-232 Converter

(IC690ACC900) for the Series 90 Programmable Logic Controllers.

Features

■ Provides the Series 90 PLCs with an interface to devices that use the RS-232 interface.

■ Allows connection to programming computer without a Work Station Interface board.

■ Easy cable connection to either a Series 90-70 PLC or a Series 90-30 PLC.

■ No external power needed; operates from +5 volt DC power on the Series 90 PLC backplane.

■ Convenient, light weight self-contained unit.

Functions

The RS-422/RS-485 to RS-232 Converter provides an RS-232 serial interface for the Series 90-70

and Series 90-30 PLCs, which have a built-in RS-422/RS-485 interface. Specifically, it provides a

serial connection between a Series 90-30 or Series 90-70 PLC serial port and the serial port on the

programming computer without the need for a Work Station Interface to be installed in the

computer. The programming computer can be a Workmaster II computer, or IBM PS/2 or

compatible computer.

GFK-0356Q

B-1

Location in System

The RS-422/RS-485 to RS-232 converter is a free-standing device which requires two cables as the

connections between the PLC and the programmer. Its location is limited only by the length of the

connecting cables as listed in the interface specifications. The cable at the PLC end that connects

to the RS-422/RS-485 connector on the converter can be up to 10 feet in length (without an

external source of +5 VDC) and up to 1000 feet (300m) in length with an external source of

+5VDC. The cable from the RS-232 connector on the converter to the programming computer’s

serial port can be up to 50 feet (15m) in length.

FRONT VIEW

REAR VIEW

GE Fanu c

IC690ACC900A

CABLE ADAPTER

MADE IN USA

Figure B-1. Front and Rear View of Converter

Installation

Installation of the RS-422/RS-485 to RS-232 Converter consists of connecting two cables. Select

the proper cables for your installation. Prewired cables (see below) are available from GE Fanuc,

or if cables of different lengths are required by your application, you can build your own cables.

Specifications for building these cables are provided later in this appendix.

You do not need to connect an external source of power to the converter for a cable length of 10

feet, or less, since the necessary power connections of +5 VDC and signal ground are derived from

the PLCs backplane bus through the cable which connects to the Series 90-30 or 90-70 PLC.

Select one of the three RS-232 compatible cables (10 feet in length) that will connect the

programmer’s (or other serial device) RS-232 serial port to the RS-232 port on the converter.

The catalog numbers of these cables are: IC690CBL701 (use with Workmaster industrial

computer, or IBM PC-XT or compatible personal computer), IC690CBL702 (use with IBM

PC-AT or compatible personal computer), and IC690CBL705 (use with Workmaster II

industrial computer, or IBM PS/2 or compatible personal computer).

A standard 6-foot cable (HHP compatible) is available to connect the RS-422/RS-485 port on

the converter to the RS-485 port on the Series 90-30 or Series 90-70 PLC. The catalog number

of this cable is IC693CBL303.

Installation of these cables should be done with the PLC powered-down.

• Connect the 25-pin male connector on the 10 foot cable to the 25-pin female connector on the

converter.

B-2

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

GFK-0356Q

• Connect the female connector (9-pin or 25-pin) on the opposite end of this cable to the male

RS-232 connector (serial port) on the selected programming (or other serial) device. If you

build you own cable, use a connector that is compatible with your serial device.

• Notice that both ends of the 6-foot RS-422/RS-485 compatible cable are the same; a 15-pin

male connector is attached at both ends. Connect one end of this cable to the 15-pin female

connector on the RS-422/RS-485 connector on the converter.

• Connect the other end of this cable to the 15-pin female connector, which interfaces to the RS-

485 compatible serial port on the Series 90-30 or Series 90-70 PLC. For the Series 90-30 PLC,

this connector is accessed by opening the hinged door on the power supply. The serial port

connector for the Series 90-70 PLC is on the CPU module, and is accessed by opening the

hinged door on the module.

Cable Description

The serial connection to the Series 90-70 PLC (see Figure B-1) is to the RS-422/RS-485

compatible serial port connector, located at the bottom of the CPU module behind the hinged door,

through a 6 foot (2 meter) serial interface cable, IC693CBL303. Wiring information and

recommended cable and connectors are provided for those who may want to build their own cable

having a different length.

The serial connection to the Series 90-30 PLC is to the RS-485 compatible serial port connector

located behind the hinged door on the right front of the power supply, through the same 6 foot

serial interface cable, IC693CBL303, or equivalent, Figure B-2).

SERIES 90-70

PROGRAMMER

RS-485

RS-232

CONVERTER

Figure B-2. Typical Configuration with Series 90-70 PLC

GFK-0356Q

Appendix B IC690ACC900 Converter

B-3

Table B-3. Jumper Configuration for RS-422/RS-485 to RS-232 Converter

Jumper

Label

Jumper

Description*

Position

JP2

DCD

1 2

Default position 1 and 2 is used when the device communicating

with the PLC does not supply the Carrier Detect signal. JP2 forces

the DCD signal active on the RS-485 port.

1 2 3

Use jumper positions 2 and 3 if the device does supply the Carrier

Detect signal. This allows the programming device to control

DCD.

JP3

MODEM

1 2

Default position 1 and 2 is used when an attached Modem does not

require the Clear To Send (CTS) signal. This allows the

programming device to control the RTS signal.

1 2 3

Jumper positions 2 and 3 are used when the attached Modem does

require the CTS signal (most modems require this signal). Forces

RTS to be continually active.

JP4

ATTACH

1 2

Default position 1 and 2 is used for most applications

communicating with the PLC via a serial programming device.

1 2 3

Jumper positions 2 and 3 are used if the device communicating with

the PLC is intended to emulate the HHP protocol.

*Refer to the documentation for your serial device for signal requirements.

B-8

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

GFK-0356Q

FANUC Series 90-30 PLC. Installation and Hardware Manual (GFK-0356Q) - page 12