PRODUCT INFORMATION
Product Overview
The General Electric IC693CMM311 is a Communications Coprocessor Module designed for the Series 90-30 PLC platform. This single-slot module adds serial connectivity supporting CCM, SNP, SNP-X, and Modbus RTU slave communications. It operates on modular Series 90-30 systems to offload communication processing tasks from the central processor. The hardware mounts directly into any available I/O slot within the Series 90-30 CPU baseplate.
Two independent serial ports provide connection to programming devices, operator interfaces, and third-party industrial hardware. Port 1 supports RS-232 electrical signaling. Port 2 accommodates RS-232, RS-422, and RS-485 electrical standards. A front push-to-restart button permits communication resets without cycling system power. Three front-panel LEDs report Module OK, Port 1, and Port 2 diagnostic states.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Weight | 1.50 lbs (0.68 kg) |
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| Product Description | Communication Coprocessor Module (CCM) |
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| Communication interfaces | Port 1: RS232 Port 2: Rs232 / RS485 |
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| Communication cable | IC693CBL305 Wye cable |
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| Compatible Devices | Modular GE Series 90-30 CPUs |
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| Supported Protocol | SNP, Modbus RTU; CMM |
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| Embedded CPUs | Not Compatible |
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| No. of CMM modules | Four (4) modules |
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| Slot width | Single slot |
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| Number of Serial Ports | 2 |
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| Module width | Single slot |
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| Slot assignment | Any slot except CPU slot |
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| RS-232 Applications | Supported |
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| Mounting | Baseplate mounted |
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| Mounting location | Series 90-30 CPU baseplate |
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| RS-485 Applications | Supported (Port 2 only) |
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| Module Location | CPU baseplate only |
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| Status LED indicators | Module OK; PORT1; PORT2 |
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| LED indicators | Module OK; US1; US2 |
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| Connection standard | Port 1: RS232 Port 2: RS232 / RS422/RS485 |
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| Product Lifecycle Status* | Discontinued/Obsolete |
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| Current load | 400 mA |
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| Port connections | 25-pin D-shell, female ports |
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| Bus voltage | +5VDC |
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| Supported protocols | CCM / RTU / SNP |
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| Communication speed | 300, 600, 1200, 240, 4800, 9600 and 19200 Baud rate |
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| Pre-assembled cable | IC693CBL305 |
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| No. of CMM module per baseplate | 4 |
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| Backplane current draw | 400 mA at 5VDC |
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TECHNICAL INFORMATION
Features
- Dual serial ports operating via a single 25-pin D-shell female interface.
- Selectable baud rates spanning 300, 600, 1200, 2400, 4800, 9600, and 19200.
- Support for GE Fanuc CCM, SNP, SNP-X, and Modbus RTU slave protocols.
- Independent port configurations enabling mixed protocol operation across both serial channels.
- Front-panel restart button allows communication re-initialization without module power cycling.
- Three diagnostic LEDs displaying Module OK, Port 1, and Port 2 status.
TECHNICAL INFORMATION
Applications
- Serial integration between Series 90-30 systems and operator interface terminals.
- Modbus RTU slave communication with third-party supervisory control systems.
- Multi-drop serial networking using RS-422 and RS-485 physical wiring standards.
TECHNICAL INFORMATION
Connections / Interfaces
- Port 1 provides dedicated RS-232 point-to-point serial communication.
- Port 2 provides RS-232, RS-422, and RS-485 serial communication.
- Both serial channels terminate at a unified 25-pin female D-shell connector.
- The IC693CBL305 Wye connection cable splits the single connector into two separate ports.
TECHNICAL INFORMATION
Installation Guidelines
- Install the module exclusively in a Series 90-30 CPU baseplate.
- Occupy any open slot on the CPU baseplate except slot 1.
- Slot 1 is reserved exclusively for the central processing unit.
- Verify the +5VDC backplane supply provides at least 400 mA for this module.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure serial parameters using configuration software or default hardware settings.
- Assignable protocol modes include CCM, SNP, SNP-X, and Modbus RTU slave combinations.
- Press the front-panel restart button to re-initiate communication following configuration updates.
TECHNICAL INFORMATION
Compatibility
- Compatible with modular GE Series 90-30 central processing units.
- Modular CPU models 331 and higher support up to four coprocessor modules per baseplate.
- Incompatible with embedded Series 90-30 CPUs including models 311, 313, and 323.
TECHNICAL INFORMATION
Lifecycle / Replacement Information
- The IC693CMM311 is classified as discontinued and obsolete by the original manufacturer.
- The hardware design originated under GE Fanuc prior to platform acquisition by Emerson Automation.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with modular GE Series 90-30 central processing units. Modular CPU models 331 and higher support up to four coprocessor modules per baseplate. Incompatible with embedded Series 90-30 CPUs including models 311, 313, and 323.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
Which Series 90-30 CPUs support the IC693CMM311 module?
The module operates with all modular Series 90-30 CPUs. It is incompatible with embedded CPU models 311, 313, and 323.
How many IC693CMM311 modules can be placed in one system?
Modular CPUs starting at model 331 support up to four communications coprocessor modules in the CPU baseplate.
How are the dual serial ports wired to external equipment?
Both channels exit through one 25-pin D-shell connector. An IC693CBL305 Wye cable splits the connection into two separate ports.
What is the indicative market price for the IC693CMM311?
Final quotations depend on inventory condition and order requirements. Figures are indicative market reference pricing only and are not a final quotation.
