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        • Lifecycle Status

          Discontinued / Obsolete by OEM
          Supplying hard-to-find legacy hardware, Apter Power provides obsolete General Electric processors to extend the operating lifespan of your established automation systems.

        IC693CPU351

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        General Electric IC693CPU351 is a single-slot Series 90-30 CPU module that executes PLC logic, manages I/O and system memory, and supports industrial communications through Ethernet, FIP, Profibus, GBC, GCM, and GCM+ option modules.
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        Ships by Thursday, October 29
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for IC693CPU351

        • Manufacturer:
          General Electric
        • Part Number:
          IC693CPU351
        • Product Family:
          GE 90-30 Series PLC
        • Product Type:
          CPU Module
        • Stock:
          1
        • 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
        • Operating Temperature:
          0 to 60 degrees C (32 to 140 degrees F) ambient
        • Typical Scan Rate:
          0.22 milliseconds per 1K of logic (boolean contacts)
        • 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)
        • System Registers:
          28 words (%SR)
        • Timers/Counters:
          >2,000
        • Shift Registers:
          Yes
        • Communications:
          LAN - Supports multidrop. Also supports Ethernet, FIP, Profibus, GBC, GCM, GCM+ option modules.
        • Override:
          Yes
        • Battery Backed Clock:
          Yes
        • Interrupt Support:
          Supports the Periodic Subroutine feature.
        • Type of Memory Storage:
          RAM and Flash
        • PCM/CCM Compatibility:
          Yes
        • Floating Point Math Support:
          Yes, firmware-based in firmware Release 9.0 and later.
        • Weight:
          0.3 kg
        • Estimated shipping dimensions:
          3.5x13x13.5cm
        • Tariff Code:
          8538900000
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Protection Application Scenarios Upgrade

        Features:

        • Combines a 25 MHz 80386EX processor with a typical Boolean logic scan rate of 0.22 milliseconds per 1K of logic for responsive PLC program execution.
        • Supports eight-baseplate system configurations together with large discrete I/O, internal coil, timer, counter, status, and register resources for expanded automation systems.
        • Provides RAM and Flash storage, battery-backed clock, override capability, periodic subroutine support, PCM/CCM compatibility, and multiple industrial communication options.
        Industrial control systems often need a CPU capable of coordinating logic execution, field I/O, internal references, communications, and expansion hardware from a single control point. General Electric IC693CPU351 addresses those requirements with a single-slot architecture that can manage a CPU baseplate together with as many as seven expansion or remote baseplates. Such capacity makes the module useful when machinery or process equipment requires control resources distributed across several racks. The available memory references, timers, counters, and system-status functions give PLC programs sufficient resources for sequencing, interlocking, monitoring, and equipment coordination. Communication expansion further allows the controller to participate in larger automation architectures.

        Maintenance flexibility is another important aspect of IC693CPU351. RAM supports active application operation, while Flash memory provides a non-volatile location for user information and firmware. Before firmware changes, application information can be preserved in Flash or in a computer-based backup folder, reducing the risk of losing program, configuration, and status data. Serial firmware downloading through Port 1 provides a defined maintenance path for CPU updates. Compatibility requirements for Ethernet interfaces and FBC revisions should also be considered when the CPU is used with related option modules.

        For installations approaching a CPU replacement or system modernization stage, General Electric IC693CPU351 has a documented migration path to CPU363. Functional backward compatibility allows the newer CPU to replace CPU351, while careful preparation preserves the original PLC application and communication configuration. Grounding arrangements, serial connector orientation, and configuration settings require attention during the change because the physical layouts are not identical. CPU351 remains limited to firmware Release 9.11, while later CPU363 firmware adds capabilities not available to the earlier module. Such considerations make backup records and accurate configuration documentation especially valuable during long-term system maintenance.

        The IC693CPU351 General Electric CPU Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        General Electric IC693CPU351 CPU Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        General Electric IC693CPU351 CPU Module Specs

        General

        • Manufacturer General Electric
        • Model IC693CPU351
        • Condition New Original ready stock
        • Product Family IC693CPU350,IC693CPU363,IC693CPU351-BC
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Password Security: The module provides multi-level user password protection to prevent unauthorized personnel from modifying or reading the control program.
        • Battery Backup: The built-in lithium battery protects the program and field data in RAM from loss when the module is completely powered off.
        • Overcurrent Protection: The base and backplane interface integrate electronic overcurrent protection mechanisms to prevent damage to the core chip from external transient surges.
        • Flash Memory Burning: Supports direct burning of critical operating logic to non-volatile Flash memory, achieving permanent tamper-proof protection.
        • Self-Test Diagnosis: The module performs cyclic hardware self-tests during power-on and operation, triggering an alarm immediately upon detecting a fault.
        • Medium-sized Packaging Machinery: Used to control complex sealing, cutting, and conveying actions, achieving precise trajectory positioning for multi-axis linkage.
        • Building Automation Systems: Deployed in the central air conditioning and lighting control cabinets of large shopping malls, managing hundreds or thousands of monitoring points.
        • Boiler Control Units: Real-time acquisition of temperature and pressure sensor data, adjusting valve opening through a built-in PID algorithm.
        • Conveyor Belt Sorting Lines: Responsible for scanner data processing in logistics centers and quickly driving pneumatic push rods to complete goods sorting.
        • Water Pump Station Monitoring Points: With the help of a remote communication module, perform 24/7 automatic start/stop control in unattended water supply stations.
        • Firmware Update: The module supports direct flashing of new firmware via the serial communication interface to obtain the latest system functions.
        • Memory Expansion: Allows online adjustment of logic configuration space according to process requirements, flexibly allocating register and program area capacity.
        • Clock Calibration: High-precision synchronization adjustment of the internal real-time clock can be performed via a connected host computer or network master station.
        • Configuration Replacement: Compatible with the Series 90-30 series' common software environment, seamlessly importing legacy projects for hardware replacement.
        • Bus Expansion: The I/O capacity of the entire control system can be cascaded and expanded by adding backplane interfaces.
        Description
        General Electric IC693CPU351 is a single-slot CPU module built around a 25 MHz 80386EX processor for Series 90-30 PLC systems. The module supports a system configuration of up to eight baseplates, including one CPU baseplate and seven expansion or remote baseplates. Power demand is 890 mA from the +5 VDC supply, while the specified ambient operating temperature range is 0°C to 60°C. With a typical scan rate of 0.22 milliseconds per 1K of Boolean logic, the CPU provides the processing capability required for machine sequencing, logic control, and distributed industrial automation.

        IC693CPU351 manages a substantial range of PLC references for control applications. Available resources include 2,048 discrete input points in %I, 2,048 discrete output points in %Q, 1,280 bits of %G discrete global memory, 4,096 bits of %M internal coils, and 256 bits of %T temporary output coils. System information is supported by 128 %S status bits divided among %S, %SA, %SB, and %SC, together with 28 words of %SR system registers. More than 2,000 timers and counters are available, and shift register functions are also supported for applications requiring sequence tracking, timing, counting, and status handling.

        IC693CPU351 combines RAM and Flash memory storage with a battery-backed clock, allowing program information and time-related functions to be maintained as required by the PLC application. Override capability, PCM/CCM compatibility, periodic subroutine interrupt support, and firmware-based floating-point mathematics from firmware Release 9.0 onward expand the module's control functions. Communication options include multidrop LAN operation as well as Ethernet, FIP, Profibus, GBC, GCM, and GCM+ modules. The combination of processing, memory, communication, and interrupt capabilities makes the CPU suitable for systems where centralized logic must coordinate multiple racks or communication networks.

        Firmware and user-memory handling are important considerations when maintaining IC693CPU351. User information stored in RAM, including the program, configuration, CPU ID used for SNP communications, and status tables, is automatically cleared when firmware stored in Flash memory is changed. A practical maintenance procedure is to back up user information from RAM to Flash before updating firmware and restore the information afterward, or recover the application from a computer-based backup folder. The SNP ID requires separate configuration through programming software or the Hand-Held Programmer. Firmware upgrades are serially downloaded to Port 1 through the RJ-11 connector, with IC693CBL316 providing a 15-pin D-shell computer connection to the six-pin RJ-11 CPU connection.

        IC693CPU351 can be replaced by IC693CPU363 because CPU363 is functionally backward compatible, but the replacement requires several installation and configuration checks. The existing application program should be backed up before CPU351 removal because RAM contents are lost when the module is removed. CPU configuration values, including the SNP ID and communication settings, should be recorded and reproduced in the replacement CPU363 configuration. Port 1 and Port 2 connector orientation differs between the two modules, the shield ground tab changes from the bottom of CPU351 to the front panel of CPU363, and the CPU351 ground shield bracket should be removed when CPU363 is installed. CPU351 firmware development ends at Release 9.11, so functions introduced in CPU363 firmware Release 10.00 are not available on CPU351.
        Revisions

        Revision Part #

        Also known as

        IC693CPU351CD
        IC693CPU351-CD, Series CD, Rev CD
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        IC693CPU351DF
        IC693CPU351-DF, Series DF, Rev DF
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        IC693CPU351DH
        IC693CPU351-DH, Series DH, Rev DH
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        IC693CPU351DJ
        IC693CPU351-DJ, Series DJ, Rev DJ
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        IC693CPU351EK
        IC693CPU351-EK, Series EK, Rev EK
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        IC693CPU351FN
        IC693CPU351-FN, Series FN, Rev FN
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        IC693CPU351GP
        IC693CPU351-GP, Series GP, Rev GP
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        IC693CPU351GR
        IC693CPU351-GR, Series GR, Rev GR
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        IC693CPU351GT
        IC693CPU351-GT, Series GT, Rev GT
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        IC693CPU351HT
        IC693CPU351-HT, Series HT, Rev HT
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        IC693CPU351JT
        IC693CPU351-JT, Series JT, Rev JT
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        IC693CPU351KT
        IC693CPU351-KT, Series KT, Rev KT
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        Alternative Names
        1C693CPU351 1C693CPU35I IC693CPU35I IC693CPU350 IC693CPU363 IC693PTM101 IC693PBS105 IC693MDL930
        Technical notes
        The IC693CPU351 processor by General Electric serves as a dependable computing core supporting up to 8 legacy expansion racks for comprehensive industrial automation setups. Featuring a built-in calendar clock and battery-backed RAM, it ensures uninterrupted state monitoring for critical infrastructure applications.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        What type of PLC module is General Electric IC693CPU351?
        General Electric IC693CPU351 is a single-slot CPU module using a 25 MHz 80386EX processor. It performs PLC logic processing, manages system memory and I/O references, and supports expansion and communication functions within a Series 90-30 system.
        How much discrete I/O can IC693CPU351 handle?
        IC693CPU351 provides 2,048 %I discrete input points and 2,048 %Q discrete output points. Additional control resources include 1,280 %G bits, 4,096 %M internal coil bits, 256 %T temporary coil bits, 128 system status bits, and 28 system register words.
        Does IC693CPU351 support floating-point calculations?
        Floating-point mathematics is supported by IC693CPU351 through firmware beginning with Release 9.0. The function is firmware-based and can be used where the PLC program requires calculations beyond basic integer logic.
        What should be checked when replacing IC693CPU351 with IC693CPU363?
        A current application backup should be prepared first, followed by recording CPU configuration and communication settings. Connector orientation, shield grounding, the CPU351 ground shield bracket, and CPU363 configuration should also be reviewed because the two modules have physical installation differences even though CPU363 is functionally backward compatible.

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