The GE Fanuc IC693CMM311, also cataloged as the IC693CMM311 Communications Coprocessor Module, operates as a dedicated hardware component for serial data communication within Series 90-30 PLC platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC693CMM311 |
| Brand | GE Fanuc Emerson |
| Origin | United States |
| Weight | 0.28 kg (0.63 lbs) |
| Dimensions | Single slot width |
| Operating Temp | Industry standard 0 to 60 deg C (ambient) |
| Power Consumption | 400 mA at 5 VDC |
| Communication Interfaces |
Port 1: RS-232 Port 2: RS-232 / RS-422 / RS-485 |
| Connector Type | Twin 25-pin D-shell female interfaces (via integrated connector block) |
| Supported Protocols | CCM, Modbus RTU Slave, SNP, SNP-X |
| Baud Rates | 300, 600, 1200, 2400, 4800, 9600, 19200 bps |
| Maximum Modules | Up to 4 modules per CPU baseplate (CPU 331 and later) |
| Compatibility | Modular Series 90-30 CPUs only (Not compatible with embedded CPUs 311, 313, 323) |
| Status Indicators | MODULE OK, PORT 1, PORT 2 LEDs |
| Companion Cable | IC693CBL305 Wye connection cable |
Backplane Bus Communication Velocity and Deterministic Networks
The module interfaces directly with the Series 90-30 backplane, utilizing high-speed backplane bus communication velocity to route serial data packages without increasing CPU processing latency. By handling data encapsulation for protocols such as Modbus RTU and SNP natively on the card, it optimizes deterministic networks performance across the PLC rack. It enables flexible I/O density scaling via remote links while ensuring firmware flash compatibility across connected modular processors remains uninhibited during data bursts.
Frequently Asked Questions
Q: Can this module be used alongside embedded Series 90-30 CPU modules?
A: No. The IC693CMM311 requires a modular CPU architecture. It is incompatible with embedded CPU models 311, 313, and 323.
Q: What is the purpose of the front-panel pushbutton on the module?
A: The hardware includes a push-to-restart communication button. This allows field technicians to re-initiate serial communication routines and clear port lockups without cycling power to the entire PLC rack or module.
Field Installation Guidelines
- Power down the baseplate before inserting or removing the module. Insertion while the backplane is energized can result in electrical component failure.
- Slide the module into any available slot on the Series 90-30 CPU baseplate, excluding the dedicated CPU slot, ensuring the backplane connectors seat completely.
- Secure the module chassis latch firmly to the baseplate assembly to prevent movement from vibration.
- Use the IC693CBL305 Wye cable to split the physical 25-pin D-shell interface into individual port leads for RS-232 and RS-485 applications.
- Ground all communication cable shields to the local enclosure earth bar to suppress electro-magnetic interference.
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