Product Introduction
The GE IC693CMM311 Communications Coprocessor Module is a vital component for the Series 90-30 PLC platform. Originally manufactured by GE Fanuc and now under Emerson Automation, the IC693CMM311 provides flexible serial communication capabilities. It offers two communication ports: Port 1 supports RS232, while Port 2 supports RS232, RS422, and RS485 electrical standards. This module facilitates CCM, RTU, and SNP protocols, enabling seamless integration with various industrial networks.
As part of the reliable Series 90-30 family, the IC693CMM311 is designed for modular CPUs and cannot be used with embedded CPUs such as the 311, 313, or 323. It occupies a single slot in the CPU baseplate and requires a 5 VDC backplane current of 400 mA. The module includes status LEDs for MODULE OK, PORT1, and PORT2 to simplify diagnostics. For users looking to upgrade an aging communication network, the GE IC693CMM311 provides a proven solution with broad compatibility.
Technical Specifications
Below are the key specifications for the GE IC693CMM311 Communications Coprocessor Module, sourced directly from product documentation.
| Parameter |
Specification |
| Manufacturer |
GE Fanuc / Emerson Automation |
| Series |
Series 90-30 |
| Part Number |
IC693CMM311 |
| Product Type |
Communications Coprocessor Module |
| Communication Interfaces |
Port 1: RS232; Port 2: RS232/RS422/RS485 |
| Supported Protocols |
CCM, RTU, SNP |
| Number of Serial Ports |
2 (25-pin D-shell female) |
| Slot Width |
Single slot |
| Backplane Current Draw |
400 mA at 5 VDC |
| Compatible Pre-assembled Cable |
IC693CBL305 Wye cable |
| Maximum Modules per Baseplate |
4 |
| Baud Rates Supported |
300, 600, 1200, 2400, 4800, 9600, 19200 |
| Status Indicators |
MODULE OK, PORT1, PORT2 |
| Product Lifecycle Status |
Discontinued/Obsolete |
Application Examples
The GE IC693CMM311 excels in environments where legacy PLC systems require reliable serial communication. In a manufacturing plant with a Series 90-30 PLC controlling assembly lines, the IC693CMM311 connects to remote I/O racks using RS485 and RTU protocol, ensuring efficient data exchange. Another common use is in water treatment facilities where the module links a GE 90-30 to a SCADA system via SNP protocol, providing real-time monitoring. For upgrading an existing network, the IC693CMM311 replaces older communication modules without requiring major controller changes, significantly reducing downtime and retrofit costs.
Compatibility and Integration
The IC693CMM311 integrates seamlessly with modular GE Series 90-30 CPUs, including models 331 and later. It supports up to four modules per CPU baseplate, allowing multiple communication channels. The module works with CCM, RTU, and SNP protocols, making it compatible with a wide range of industrial devices such as drives, HMIs, and other PLCs. The pre-assembled IC693CBL305 Wye cable simplifies wiring by separating the two serial ports. Note that the IC693CMM311 is not compatible with embedded CPUs. This design makes it an ideal upgrade choice for expanding communication capabilities in existing installations.
Selection Guide and Purchasing Advice
When purchasing a GE IC693CMM311 Communications Coprocessor Module, verify that your system uses modular Series 90-30 CPUs and that you have an available slot in the baseplate. Ensure the backplane current does not exceed the power supply capacity. As this module is discontinued, confirm its condition and warranty with a reliable supplier like UBEST Automation. Visit ubest101 for more industrial automation spares and replacement parts.