GE Fanuc Ethernet Controller Modules Series 90-70 IC697CMM741

The GE Fanuc IC697CMM741, also cataloged as the IC697CMM741 Ethernet Controller Module, operates as a dedicated hardware component for high-speed data communication within Series 90-70 PLC platforms. This module establishes a direct physical and electrical interface between the controller backplane and local area networks adhering to the IEEE 802.3 CSMA/CD specification. It executes data packet encapsulation and transmission via localized media attachment units to enable network interconnectivity.

Hardware Specifications

Backplane Bus Communication Velocity and Firmware

The hardware utilizes standard parallel interface lines to link directly with the host Series 90-70 CPU via the chassis backplane. To maintain deterministic backplane bus communication velocity and prevent data collisions across the internal parallel tracks, the module runs specialized low-level processing logic that functions independently of the main program scan. Operational integrity relies on specific firmware flash compatibility benchmarks across the CPU and network interfaces; mismatched revisions can prevent the module from completing its diagnostic sequence or responding to programming software commands during initial rack synchronization.

Frequently Asked Questions

Q: Does the IC697CMM741 module support live hot-swap insertion while the chassis backplane is energized?

A: No. The backplane architecture of the Series 90-70 PLC does not accommodate live insertion or removal of hardware. Power to the entire rack assembly must be switched off prior to installing or removing the card to prevent catastrophic hardware faults or logic failure states.

Q: What function does the internal battery connection serve on the front edge of the circuit board?

A: The on-board battery connection ensures data retention for the localized static random-access memory (SRAM) storage blocks containing the configuration parameter tables. This prevents memory depletion and loss of network settings during primary rack power outages.

Field Installation Guidelines

• Chassis Power Sequence: Disengage all primary power feeds supplying the rack enclosure before sliding the module into its designated slot. Ensure the module aligns precisely with the upper and lower guide rails.
• Transceiver Termination: Connect the external transceiver or AUI media attachment cable securely to the 15-pin D-sub interface using the sliding mechanical locking bar. Ensure the external transceiver has its Signal Quality Error (SQE) test enabled if required by the application network architecture.
• Shield Grounding Control: Connect structural network cable shielding directly to the local earth ground busbar system. Maintain isolation from active neutral lines or low-voltage signal returns to minimize common-mode electrical noise injection.
• Adjacent Component Spacing: Position the module in the first available slot directly to the right of the host CPU or Bus Receiver Module (BTM) to guarantee optimal bus trace signal integrity.