GE IC693CMM311 communications coprocessor module

Description

Real-World Use & Application Scenarios

The GE Fanuc IC693CMM311 Communications Coprocessor Module is a specialized component widely employed in industrial automation systems built on the Series 90-30 platform. This module is crucial in settings demanding high-performance communication capabilities alongside modular CPU operation. Manufacturing facilities, process industries, and infrastructure automation projects rely on the IC693CMM311 to facilitate robust data exchange between PLC processors and external devices or control networks. It supports communication protocols essential for interoperability, making it applicable in scenarios involving remote data acquisition, supervisory control, and distributed automation where signal integrity and protocol compatibility are pivotal.

The communications module addresses environments where multiple serial communication types and protocols must coexist, enabling seamless integration into complex control architectures. Its ability to handle GE Fanuc CCM, RTU (Modbus), and SNP protocols makes the IC693CMM311 ideal for applications requiring legacy system connection or protocol bridging. Engineers and integrators favor this module for enhancing system communication performance within the Series 90-30 modular PLC families, providing a communication backbone that supports scalable, high-availability automation solutions.

Product Introduction & Positioning

The GE Fanuc IC693CMM311 is a communications coprocessor module designed for GE’s Series 90-30 modular programmable logic controller (PLC) systems. Unlike embedded CPU modules, this coprocessor acts as an auxiliary processing unit dedicated to handling communications tasks, offloading protocol processing from the main CPU. It equips modular CPU-based control systems with enhanced two-port serial communication capabilities, supporting both RS-232 and RS-485 interfaces for flexible connectivity.

This module integrates physically into the PLC rack’s modular slots and logically interfaces with modular CPUs such as the 311, 313, or 323 models. The architecture supports configuration via Logicmaster, VersaPro software, or default settings, aiding straightforward setup. Its ability to manage communication protocols like GE Fanuc CCM, RTU (Modbus) slave communications, and SNP provides versatile protocol support essential for broad industry applicability. The IC693CMM311 delivers system designers and engineers a dedicated communication coprocessor that improves overall system throughput and reliability in industrial automation applications.

Key Technical Features & Functional Benefits

The GE Fanuc IC693CMM311 supports two serial communication ports: Port 1 dedicated to RS-232 and Port 2 configurable for either RS-232 or RS-485. This dual-port setup enhances system communication flexibility, permitting connections to multiple devices or networks with distinct physical layer requirements. The module draws approximately 400 mA of current at 5 VDC supplied from the PLC backplane, ensuring integration without external power supplies.

It supports essential communication protocols including GE Fanuc’s proprietary CCM, the industry-standard RTU Modbus slave, and SNP, enabling broad interoperability. Pre-loaded control functions simplify integration by reducing setup time. The module’s interface includes LEDs to indicate operation and communication status, providing visual diagnostics for maintenance and troubleshooting.

The module’s wired single connector configuration necessitates a wye cable (IC693CBL305) to separate the two serial ports conveniently, improving wiring management. Up to four IC693CMM311 modules can be used in systems with suitable CPU modules, allowing scalable communication expansions to match application needs. Overall, this coprocessor enhances communication processing speed and robustness, reducing CPU load and improving system response times.

Detailed Technical Specifications

Related Modules or Compatible Units

IC693CPU311 – Modular CPU compatible with the 90-30 system and supports coprocessor communication modules.

IC693PCM301 – Protocol converter module for protocol interface extensions.

IC693CMM711 – Communications coprocessor module for the Series 90-70 platform.

IC693MDL340F – Discrete output module working alongside communication modules in control configurations.

IC693CHS012 – Controller and I/O backplane for 12-slot Series 90-30 systems.

IC693PWR330 – Power supply module for Series 90-30 racks.

Installation Notes & Maintenance Best Practices

Proper installation of the IC693CMM311 involves seating the module securely in any available I/O slot within the Series 90-30 modular PLC rack. Adequate attention must be given to cabling, especially using the wye cable (IC693CBL305) provided to separate the serial ports for neat wiring and signal integrity. Ensure the rack’s power supply delivers stable 5 VDC power to the module via the backplane connectors. Proper grounding of the rack and cabling is essential for minimizing electromagnetic interference.

Maintenance includes monitoring the module’s status LEDs to verify operation and communication integrity regularly. Periodic inspections should check for connector cleanliness and physical damage. Configuration and firmware updates are managed using GE’s programming software tools, allowing optimization of communication parameters. Prompt troubleshooting supported by diagnostic LEDs minimizes downtime and supports reliable system communication performance.