GE Fanuc IC693CMM311N CCM SNP Modbus Slave Interface
Manufacturer: GE Fanuc
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Part Number: IC693CMM311N
Condition：New with Original Package
Product Type: Communications Coprocessors
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The GE Fanuc IC693CMM311N functions as a high-performance Communications Coprocessor for the Series 90-30 PLC platform. This module offloads intensive networking and data exchange tasks from the main CPU, ensuring that logic execution remains uninterrupted during heavy serial traffic. It provides two independent serial ports supporting SNP, CCM, and Modbus RTU (Slave) protocols. By managing complex communication datagrams locally, the IC693CMM311N enhances overall system throughput and facilitates seamless integration with HMIs, third-party PLCs, and SCADA software.
Technical Specifications
| Parameter | Professional Specification |
| Model Number | IC693CMM311N (Version 4.0 Firmware or higher) |
| Series | GE Fanuc Series 90-30 |
| Port 1 | RS-232 (9-pin D-connector) |
| Port 2 | RS-232 or RS-485 (15-pin D-connector) |
| Protocols | SNP, SNP-X, CCM, Modbus RTU (Slave) |
| CPU Compatibility | Modular CPUs (311, 313, 323, 331 and higher) |
| System Capacity | Up to 4 CMM modules per PLC (with CPU 331+) |
| Power Draw | 400 mA from +5V Backplane Bus |
| Baud Rates | Up to 19.2 Kbps (protocol dependent) |
| Weight | 0.40 kg (Net) |
Engineering Advantages
The IC693CMM311N addresses technical bottlenecks in distributed control architectures through several key engineering features:
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CPU Load Mitigation: The on-board processor handles all parity checks, framing, and protocol handshaking. This dedicated processing prevents the main PLC CPU from stalling during large data bursts, maintaining deterministic scan times.
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Protocol Versatility: Integrated support for Modbus RTU Slave allows the Series 90-30 to communicate with virtually any modern industrial device. This eliminates the need for expensive third-party protocol converters.
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Dual Port Independence: Port 1 and Port 2 operate as separate entities. This allows engineers to use Port 1 for local HMI connectivity while simultaneously utilizing Port 2 for a wide-area RS-485 network.
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Firmware Reliability: The N-revision (and above) includes updated firmware that specifically resolves dual-slave datagram collision issues found in earlier versions, ensuring stable data integrity in multi-master environments.
FAQs
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Is this GE IC693CMM311N unit 100% Brand New?
Yes. We supply the IC693CMM311N in 100% Brand New and Original condition. Every unit arrives in its original factory packaging, guaranteeing the hardware has never been commissioned or used in the field.
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Can I use this module with an embedded (non-modular) CPU?
The IC693CMM311N requires a modular CPU (such as the 311, 331, or 350 series) and a compatible backplane. It does not support the fixed "all-in-one" Series 90-30 units that lack expansion slots.
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Does this module support Modbus RTU Master mode?
The IC693CMM311N natively supports Modbus RTU Slave mode. If your application requires the PLC to act as a Modbus Master, you may need a different module revision or specific C-toolkit applications; however, for standard data monitoring, Slave mode provides the necessary telemetry interface.
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What is the significance of the "N" suffix?
The "N" suffix indicates a specific hardware and firmware revision. It ensures compatibility with the latest Series 90-30 backplanes and includes the necessary firmware updates to handle modern communication timings and error-checking protocols.