GE Fanuc IC693CMM311T

Product Overview

The GE Fanuc IC693CMM311T is a Communications Coprocessor Module designed for the Series 90-30 PLC platform. It provides dedicated communication processing for modular Series 90-30 CPUs and supports multiple serial communication protocols, including GE Fanuc CCM, SNP, and RTU Modbus.

The module features two serial communication ports. Port 1 supports RS-232, while Port 2 can operate with RS-232 or RS-485, giving engineers greater flexibility when connecting PLCs with external industrial devices.

The IC693CMM311T is particularly useful for maintaining existing Series 90-30 installations where reliable serial communication remains an important part of the control architecture.

Technical Parameters

These specifications are based on available Series 90-30 documentation and product references.

Key Features

• Dedicated communications coprocessor architecture
• Two serial communication ports
• Supports CCM, SNP, and RTU Modbus protocols
• RS-232 communication on Port 1
• RS-232 or RS-485 communication on Port 2
• Designed for modular Series 90-30 CPUs
• Single-slot installation
• Configurable communication parameters

Structure and Function

The IC693CMM311T is installed directly into the Series 90-30 PLC baseplate. Its onboard communication circuitry handles serial data exchange, allowing the host PLC to communicate with external control devices without placing all communication-processing tasks on the main CPU.

Both serial ports are integrated into the module interface. A suitable cable assembly can be used to separate and connect the two communication channels for field wiring.

Industrial Applications

The module can be used in industrial systems that require serial communication between a Series 90-30 PLC and other devices, such as:

• Factory automation systems
• Machine control equipment
• SCADA installations
• Data acquisition systems
• Process control equipment
• Legacy PLC communication networks
• Industrial monitoring systems

Installation and Maintenance

Before installation, isolate the PLC from power and follow appropriate electrical safety procedures. Verify that the replacement unit carries the correct IC693CMM311T family identification and revision.

After installation, check the communication configuration, cable connections, protocol settings, and status LEDs. In addition, confirm that the connected devices can exchange data correctly before returning the system to normal operation.

Because the Series 90-30 platform is a legacy automation system, maintaining compatible spare communication modules can help reduce downtime during unexpected failures.