ABB CM597-ETH AC500 Communication Module

The ABB CM597-ETH, also cataloged as the CM597-ETH Communication Module, operates as a dedicated hardware component for high-speed Industrial Ethernet routing and protocol execution within AC500 PLC platforms.

Hardware Specifications

Backplane Bus & Communication Protocols

The ABB CM597-ETH integrates directly with AC500 V2 CPUs using a high-speed parallel terminal base connection. Internal communication processing provides deterministic handling of Modbus TCP, TCP/IP, and UDP socket protocols across two integrated Ethernet switch ports. Firmware flash compatibility ensures synchronized cyclic polling across distributed automation networks while maintaining low backplane bus communication velocity latency during heavy network data transfers.

Frequently Asked Questions

Q: Does the CM597-ETH require an external managed switch to bridge its two Ethernet ports?

A: No. The module features an integrated 2-port Ethernet switch operating at 100 Mbit/s, enabling direct daisy-chain topology network layouts without external switching hardware.

Q: Can the CM597-ETH module be replaced without cycling power to the main AC500 CPU baseplate?

A: No. Hot-swapping is not supported on the AC500 communication module slot. Power to the CPU terminal base must be turned off before attaching or removing the CM597-ETH module.

Field Installation Guidelines

1. Power off the AC500 CPU baseplate before plugging the module into the designated communication expansion slot.
2. Ensure the bottom locking mechanism clicks firmly onto the terminal base to establish electrical grounding contacts.
3. Use CAT5e or better shielded twisted-pair (STP) Ethernet cabling terminated with RJ45 connectors.
4. Ground the Ethernet cable shielding at the panel entry point to prevent high-frequency noise from affecting Modbus TCP communication lines.