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IC693CPU352 Wiring

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  • IC693CPU352
  • IC693CPU352 Wiring

Product Description

The IC693CPU352 is a single slot CPU module manufactured by GE Automation and Controls for the Series 90/30 PLC system. The total number of Baseplates for each system is 8, which includes one baseplate for CPU, and seven remote and expansion. The load requirement of the Power Supply is 890mA from a +5Volts DC supply. The processor type is an 80386EX with a processing speed of 25Mhz. The optimum operating temperature for the system is between 0 degrees and 60 degrees Celsius (32 degrees and 140 degrees Fahrenheit). This specification is also referred to as the ambient temperature. The typical rate of scanning is 0.22milliseconds for every 1K logic (I.e., Boolean contacts).

Since the release of version 9.0 firmware, the maximum program memory for the user is 240K Bytes. However, the effective available size of the program memory for the user depends on configured amounts for configurable types of word memory. The discrete input and output points are 2048 each, 4096 bits for internal coils, 1280 bits for global memory, 256 bits for temporary output coils, 128 bits total (%S, %SB, %SA, %SC which have 32 bits for each) as references for system status. There are %R (Register Memory), %AI (Analog Inputs), %AQ (Analog Outputs), all configurable in increments of 128 words.

There are more than 2000 numbers of Timers/Counters, and there are also Shift Registers present. There are three serial ports built-in, which support RTU slave and SNP or SNPX slave, and SNP or SNPX master or slave, and Serial Input/output (on port 1 and port 2). Communications support LAN (multidrop supported), Ethernet, Profibus, FIP, GBC, GCM+ option modules. Flash memory and RAM are the available storage memory types. The Logicmaster configuration and programming software support CPU352.

Technical Specifications

Processor Speed : 25 MHz
I/O Points : 2048
Register Memory : 240KBytes
Floating Point Math:   Yes
32 BIT system  
Processor: 80386EX


GE Intelligent Platforms / GE Fanuc GE Series 90-30

SKU 2170039  UPC 044765976521

Part Number: IC693CPU352 / ic693cpu352
Mfr/Brand Name: GE Automation
Mfr Number: IC693CPU352 / ic693cpu352
Type: Central Processing Unit (CPU)

Technical Specifications

  • Processor Speed : 25 MHz
  • I/O Points : 2048
  • Register Memory : 240KBytes Total
  • Floating Point Math : Yes
  • 32 BIT system
  • Processor: 80386EX
Troubleshooting and Product Information for IC693CPU352

Download product information, troubleshooting guides and operation manuals to get your PLC operational.

Reman IC693CPU352
Price: $995
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Repair Your IC693CPU352
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Other IC693CPU352

Available Revisions:

1C693CPU352 , GEFIC693CPU352 , CIMIC693CPU352

CPU Type                                  Single slot CPU module

Total Baseplates per System 8 (CPU baseplate + 7 expansion and/or remote)

Load Required from Power Supply 890  milliamps from +5 VDC supply

Processor Speed 25 MegaHertz

Processor Type 80386EX

Typical Scan Rate .22 milliseconds per 1K of logic (Boolean contacts)

User Memory (total) 240K (245,760) bytes, starting with firmware release 9.0. Note: Actual size of available user program memory depends on the amounts configured for the %R, %AI, and %AQ configurable word memory types (described below). Pre-9.0 firmware supported 80K bytes of fixed memory.

Discrete Input Points - %I 2,048

Discrete Output Points - %Q 2,048

Discrete Global Memory - %G 1,280 bits

Internal Coils - %M 4,096 bits

Output (Temporary) Coils - %T 256 bits

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

Register Memory - %R Configurable in 128 word increments, from 128 to 16,384 words with DOS programmer, and from 128 to 32,640 words with Windows programmer Ver. 2.2 or later, or VersaPro version 1.0 or later.

Analog Inputs - %AI Configurable in 128 word increments, from 128 to 8,192 words with DOS programmer, and from 128 to 32,640 words with Windows programmer Ver 2.2 or later, or VersaPro version 1.0 or later.

Analog Outputs - %AQ Configurable in 128 word increments, from 128 to 8,192 words with DOS programmer, and from 128 to 32,640 words with Windows programmer Ver. 2.2 or later, or VersaPro version 1.0 or later.

System Registers (for reference table

viewing only; cannot be referenced in user logic program) 28 words (%SR)

Timers/Counters >2,000 (depends on available user memory)

Shift Registers Yes

Built-in Serial Ports 3 (one uses connector on PLC power supply). Supports SNP/SNPX slave (on all three ports) and RTU slave and Serial I/O (on Ports 1 and 2). Requires CMM module for CCM and PCM module for RTU master.

Communications LAN – Supports multidrop. Also supports Ethernet, FIP, Profibus, GBC, GCM, and GCM+ option modules.

Override Yes

Battery Backed Clock Yes

Interrupt Support Supports the periodic subroutine feature.

Type of Memory Storage RAM and Flash

PCM/CCM Compatibility Yes

Floating Point Math Support Yes.  Hardware-based (uses built-in math coprocessor)

Troubleshooting IC693CPU352

Troubleshooting information is available on IC693CPU352's website page; it also includes a datasheet user-manual and a wiring diagram.  


Repair your IC693CPU352

PDF Supply can repair your IC693CPU352 in 3-5 business days. And PDF Supply stands by all of its repairs with a 1 year customer satisfaction warranty.


Customer Questions and Answers

  • Question:  What is an IC693CPU352?  Answer:  The IC693CPU352 is a single-slot Central Processing Unit (from the GE Fanuc Series 90-30) with 2 built-in serial ports. This unit is the "brains" of the PLC and is where most of the calculations take place.
  • Question:  What's the first thing you should do when testing your IC693CPU352?  Answer:  When you attach the IC693CPU352 to a 5 or 10 slot rack and power it up, you should be checking for an OK light.
  • Question:  What if I do not have an OK light after I have powered it up?  Answer:  If you don't have an OK light, then you won't be able to follow through with the test. The lack of an OK light indicates, right from the start, there is something wrong with your IC693CPU352.
  • Question:  What is this initial test showing?  Answer:  You're basically turning on the configuration and logic in this processor in order to set it to run mode. You want to see that this is a good working processor.
  • Question:  With what software should I test my IC693CPU352?  Answer:  You can test your IC693CPU352 with Proficy Machine Edition. 
  • Question:  What will I need to test my IC693CPU352?  Answer:  All you will need is your IC693CPU352, a 5 or 10 slot rack, and a power supply.
  • Question:  If I think there is a problem with my processor, what should I do?  Answer:  You should, first, make sure that when you turn on the memory on/off protection switch, the RUN light comes on and then let the processor run overnight (or even 2-3 days). This is to check that it's able to sustain itself in run mode. (You want to make sure it doesn't fail or fall out of run mode for any reason.) If it does fail or fall out of run mode, then you can try reading the faults or errors through the Proficy Machine Edition software. It may give you enough information to help you fix the problem.
  • Question:  If I can't figure out how to fix my IC693CPU352, what is my next step?  Answer:  PDF Supply can repair your IC693CPU352 for you. 
  • Question:  Things you should also be testing:  Answer:  You should make sure that both ports are working by plugging into them and making sure the LED lights come on when you do plug into them.

For more information on the IC693CPU352 Central Processing Unit of the GE 90-30 Series, please see the Datasheet Manual. 






Upgrade Kit

New Features

Problems Resolved







Hardware Upgrade - Fatal Fault Sometimes Occurs when Powering up from Flash








Rotate Right and Rotate Left functions do not handle error condition correctly

Time of Day clock at power-up may not operate

Error when run-mode storing, loading, or verifying exactly 50 blocks in run mode

Fatal Fault retry does not work correctly for some faults







IC693DSM314 support added

User Flash Write and Erase Failure

Local Logic Programs with VersaPro 1.10

PLC can Automatically go to Run Mode

Reboot after Fatal Fault

Retentive Contact Previous Values Table not being cleared

Drum Sequencer function










AI & AQ Above Default Values

Embedded Serial Ports with Rev.9.00 and 9.01 Firmware

Load File of Size 1528 Bytes

C Program with Code Area Greater Than 64K Bytes







Break-free SNP

SNP Master mode on CPU Ports


Online Changes to Reference Tables


Read from Flash








Software Floating Point

Keyswitch Configured as RUN/STOP Switch

User Memory Totals 240K bytes

Storing IC693CMM321 Configuration with Windows PLC Programming Software

Sequential Event Recorder



Service Request #7








Demko Agency approval








C Programming

Loading Default Program with Windows Programming Software

IC693 SFC Programming Supports SFC in Subroutines and Multiple Actions per Step (up to 8)








Excessive Battery Drain














C Programming

ALT-S Run Mode Store of Periodic Subroutine

Model Number Checks Removed

HHP Write to Flash or EEPROM with MS-DOS Programmer Connected

Generic String Output on CPU Ports

Watchdog Timer Timeout (both ports active)

RTU Slave Protocol


Keyswitch Configurable as User Memory Protection Switch










Watchdog Timer Timeout



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