Overview
Configured for Ethernet data communication in GE Series 90-30 control systems, the GE IC693CMM321 (IC693CMM321 Communications Coprocessor Module) provides TCP/IP Ethernet connectivity and supports CCM, RTU, and SNP protocols. In addition, the module supports up to sixteen server connections when paired with a compatible CPU version. CPU version 6.50 or higher provides full functionality, while CPU versions 5.03 to 6.04 support one SRTP connection only.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC693CMM321 |
| Brand | General Electric |
| Product Type | Communications Coprocessor Module (CCM) |
| Series | Series 90-30 |
| Interface | Ethernet Interface |
| Ethernet Protocol | TCP/IP Ethernet |
| Supported Protocols | CCM, RTU, SNP |
| Maximum Server Connections | 16 |
| Compatible CPU | CPU version 6.50 or higher for full functionality |
| CPU Compatibility Limitation | CPU versions 5.03 to 6.04 support 1 SRTP connection only |
| Connection Accessories | AAUI Cable; External Transceiver |
| Origin | USA |
| Weight | 0.3 kg |
| Dimensions | Estimated shipping size: 3.1 x 13 x 13.6 cm |
| Product Lifecycle Status | Discontinued / Obsolete |
Ethernet and Protocol Communication
The IC693CMM321 provides an Ethernet interface for communication between a Series 90-30 control system and connected Ethernet devices. In particular, TCP/IP Ethernet provides the network communication layer, while the module supports CCM, RTU, and SNP protocols.
The configured CPU version determines the available communication functionality. Therefore, CPU version 6.50 or higher supports the module’s full functionality. Meanwhile, CPU versions 5.03 through 6.04 have the specified limitation of one SRTP connection.
The module supports a maximum of sixteen server connections. In addition, the supplied connection accessories include an AAUI cable and an external transceiver.
Frequently Asked Questions
Q: What Ethernet protocol does the IC693CMM321 support?
A: The module provides a TCP/IP Ethernet interface and supports CCM, RTU, and SNP communication protocols.
Q: How many server connections can the IC693CMM321 support?
A: The supplied specifications state a maximum of sixteen server connections.
Q: Does the CPU version affect IC693CMM321 functionality?
A: Yes. CPU version 6.50 or higher supports full functionality. However, CPU versions 5.03 to 6.04 support only one SRTP connection.
Field Installation Guidelines
Install the IC693CMM321 in the designated Series 90-30 rack position and secure it according to the applicable rack hardware requirements. Before applying system power, verify that the module seats fully in the backplane connector.
Use the specified AAUI cable and external transceiver arrangement where the installation requires these accessories. In addition, route Ethernet communication cables separately from high-current power conductors and high-noise switching circuits where practical.
Terminate cable shields and protective grounding according to the applicable installation standard and the control system grounding design. Where possible, avoid unnecessary shield loops and maintain physical separation between communication wiring and motor, contactor, or other high-interference circuits.
Before commissioning, verify the installed CPU version against the required IC693CMM321 communication functions. Accordingly, confirm the one-SRTP-connection limitation when the system uses CPU versions 5.03 through 6.04.
