GE IC697CMM741 Ethernet communication module

Equipped with a dedicated communication processor (typically a 32-bit RISC architecture) to support high-speed data processing.

Onboard memory: 8MB Flash memory and 4MB DRAM, used for storing communication protocol stacks and data buffers.

Main port: 1 RJ45 Ethernet port, supporting 10/100Mbps auto-negotiation and compatible with the IEEE 802.3 standard.

Auxiliary port: 1 RS-232/RS-485 serial port (optional configuration) for redundant communication or connecting legacy devices.

Provides LED indicators for power (PWR), Ethernet activity (LINK/ACT), communication status (COMM), and faults (FAULT), facilitating on-site diagnosis.

Dimensions: 170mm × 105mm × 32mm (single-slot module), conforming to the 90-70 series rack standards.

Operating temperature: -40°C to +85°C, suitable for harsh industrial environments.

SNP (Simple Network Protocol): Used for communication between GE PLCs, supporting master-slave mode and broadcasting functions.

SNPX: An extended version of SNP with enhanced data transmission efficiency and security.

Modbus TCP: Seamless integration with third-party devices (such as frequency converters and intelligent instruments).

Ethernet/IP: A mainstream protocol in the field of industrial automation, supporting CIP (Common Industrial Protocol).

DH+ over Ethernet: Simulates a DH+ network through Ethernet, compatible with legacy systems.

HTTP: Supports web server functionality, allowing remote monitoring of module status via a browser.

SMTP: Supports email alarm functionality, automatically sending notifications when the system is abnormal.

Supports dual-network card redundant configuration (requires matching with another CMM741 module). When the main link fails, it automatically switches to the standby link to ensure uninterrupted communication.

Configurable data mapping tables, mapping PLC internal registers (such as I/O points, data blocks) to Ethernet address spaces for efficient data exchange.

Supports data buffering (up to 1024 data items) to reduce access pressure on the PLC main CPU.

Built-in web server, allowing access to the module configuration interface via a browser to view real-time status and diagnostic information.

Supports FTP functionality for convenient remote uploading/downloading of configuration files.

Supports NTP (Network Time Protocol) to ensure that the PLC system is synchronized with network time, improving the coordination of distributed control systems.

Uploads on-site PLC data to cloud platforms (such as GE Predix, AWS IoT) via Ethernet/IP or Modbus TCP protocols, enabling remote device monitoring and data analysis.

In large-scale production lines, acts as a master station to connect multiple slave PLCs (such as GE 90-30/90-70 series), achieving real-time data synchronization through the SNP protocol.

Communicates with SCADA software such as Wonderware and iFIX, transmitting PLC data to the monitoring center to support real-time display on the human-machine interface (HMI).

Serves as a protocol converter to connect GE PLCs with third-party devices such as Siemens and ABB. For example:

Engineers can remotely access PLC programs via VPN or dedicated networks using the SNPX protocol for online modification and troubleshooting.

Software tools: Use GE Fanuc's Proficy Machine Edition or VersaPro software to configure module parameters (such as IP address, subnet mask, protocol type).

Configuration key points: