IC695CMU310 GE Fanuc Serial Communications Modules PACSystems RX3i

Product Overview

The GE Fanuc IC695CMU310, also cataloged as the IC695CMU310 Serial Communications Module, operates as a dedicated hardware component for multi-protocol serial data exchange within PACSystems RX3i platforms. The unit processes asynchronous serial streams through dedicated physical interfaces, routing industrial communication protocols directly to the controller central processing unit across the system backplane.

Hardware Specifications

Industrial Control & Deterministic Backplane Communication

The serial interface leverages the high-velocity bus communication velocity capabilities of the RX3i universal backplane to synchronize industrial network signals. System memory maps and I/O density scaling are handled within the primary engineering software, which enables precise channel tuning and ensures full firmware flash compatibility. This direct register access provides deterministic integration parameters when exchanging local serial field data over upper-level networks via Profinet or EtherNet/IP bus setups.

Frequently Asked Questions

Q: Does the IC695CMU310 module require an external 24 VDC power supply connection for operation?

A: No, the module draws all required operating current directly from the internal +3.3 VDC backplane rail of the universal chassis, eliminating the need for external power terminal wiring.

Q: Can both serial ports on the module be configured with different communication protocols at the same time?

A: Yes, Port 1 and Port 2 are completely separate channels. They can be designated to run independent baud rates, station addresses, and protocol formats (such as Modbus Master on Port 1 and Serial I/O on Port 2) simultaneously.

Field Installation Guidelines

• Chassis Mounting: Slide the module into any available slot on an RX3i Universal Backplane (IC695CHSxxx). Push until the top and bottom locking levers engage securely with the chassis frame to ensure a low-impedance ground path.
• Serial Termination: For RS-485 long-distance network segments, apply external 120 Ohm terminating resistors across the Rx/Tx differential pairs at both physical endpoints of the bus line to stop signal reflection.
• Cable Shielding: Use high-quality twisted-pair shielded instrumentation cables for all RS-232 and RS-485 connections. Ground the cable shield wire at only one termination point to avoid creating electrical ground loops.
• Signal Separation: Route serial communication wiring through dedicated low-voltage wire trays. Keep these data lines isolated from high-voltage motor starters, AC lines, and switching inductive loads to prevent electromagnetic interference.