IC693PCM300 Programmable Coprocessor Modules Series 90-30 GE Fanuc

The GE Fanuc IC693PCM300, also cataloged as the IC693PCM300 Programmable Coprocessor Module, operates as a dedicated hardware component for high-speed serial data processing and interface execution within Series 90-30 PLC platforms. The module offloads complex communication tasks, protocol conversions, and mathematical calculations from the primary CPU to maintain deterministic logic scan cycles.

Hardware Specifications

Backplane Bus Communication Velocity and Serial Processing

The IC693PCM300 utilizes the internal Series 90-30 parallel backplane bus communication velocity to mirror register data blocks without interrupting the main controller logic. Through structured I/O density scaling, it integrates dual serial ports capable of executing Megabasic programs or standard CCM/Modbus RTU protocols. The system logic supports firmware flash compatibility guidelines via specific hardware configurations, enabling direct execution of asynchronous communication routines while maintaining complete physical and electrical isolation across hardware sub-assemblies.

Frequently Asked Questions

Q: Can the IC693PCM300 module be hot-swapped while the Series 90-30 rack is powered?

A: No. The Series 90-30 backplane architecture does not support hot-swapping. Inserting or removing the module while power is applied can cause permanent hardware damage to the backplane interface logic or corrupt internal memory registers.

Q: How is the memory backup managed on the IC693PCM300 module?

A: The onboard volatile RAM is backed up by the central system battery located in the power supply module of the PLC baseplate. This distribution requires that the baseplate remain connected to an operational battery unit during main power shutdowns to retain stored user programs.

Field Installation Guidelines

• Baseplate Grounding: Ensure the PLC baseplate is bonded to the master enclosure panel using a low-impedance ground strap. Inadequate grounding may introduce high-frequency electrical noise, disrupting serial data streams across both ports.
• Cable Shield Termination: All serial communication cables must use braided shields. Terminate the shield at the module chassis ground terminal using a standard grounding clamp, keeping exposed unshielded wires as short as possible to prevent electromagnetic cross-talk.
• Slot Keying Alignment: Verify that the mechanical alignment tabs on the module bottom interface match the targeted baseplate slot before insertion. Do not force the module into the slot if misalignment occurs, as this can bend backplane connector pins.