GE IC693CPU374 PLUS single-slot CPU module

GE    IC693CPU374 PLUS

       The GE Fanuc IC693CPU374 PLUS is a high-performance CPU module for the Series 90-30 PLC system, distinguished by its built-in enhanced Ethernet interface that eliminates the need for a separate communication module . Powered by a 133 MHz AMD SC520 processor, it delivers a fast typical scan rate of 0.15 ms per 1K of Boolean logic . The module features 240 KB of user memory and two embedded 10/100 Mbps Ethernet ports sharing a single IP address with an auto-sensing switch . It supports advanced industrial protocols including SRTP (Service Request Transfer Protocol) for PLC-to-PLC communication, Ethernet Global Data (EGD) for periodic data exchange, and Modbus/TCP client/server functionality . Additional capabilities include a built-in web server for remote PLC monitoring via a standard browser and comprehensive diagnostics through the Station Manager tool . The CPU374 PLUS is compatible with Series 90, PACSystems, and VersaMax PLCs, as well as host computers running CIMPLICITY or the Host Communications Toolkit .

Key Features of the IC693CPU374 PLUS

✜ Full PLC programming and configuration services

✜ Periodic data exchange using Ethernet Global Data (EGD)

✜ EGD Commands to read and write PLC and EGD exchange memory over the network

✜ TCP/IP communication services using SRTP

✜ Support for SRTP Client (Channels)

✜ Basic remote PLC monitoring from a web browser

✜ Comprehensive station management and diagnostic tools

✜ Extended PLC connectivity via IEEE 802.3 CSMA/CD 10Mbps and 100Mbps Ethernet LAN port connectors

✜ Network switch that has Auto negotiate, Sense, Speed, and crossover detection

✜ Direct connection to BaseT (twisted pair) network switch, hub, or repeater without an external transceiver

✜ Protocol is stored in flash memory in the Ethernet interface and is easily upgraded through the CPU serial port

✜ Communications with remote PLCs and other nodes reachable through routers. The gateway IP address must be configured

✜ Internet access via web pages served up to standard web browsers enhanced Ethernet feature not available prior to CPU374 PLUS (Release 12.00) 

FAQ

Q1: What is GE's legacy in the industrial automation industry?

A1: GE (General Electric), founded by Thomas Edison in 1889, was a global leader in PLC systems, including the famous Series 90-70, PACSystems RX3i/RXi, and VersaMax I/O platforms. While GE's industrial automation division was acquired by Emerson in 2019, these products remain widely used in factories worldwide .

Q2: Does GE support hot-swapping of I/O modules?

A2: Yes, most GE PACSystems and VersaMax I/O modules support hot insertion (hot-swapping) when used with compatible Network Interface Units. This allows module replacement without powering down the entire system. However, always verify your specific NIU configuration before performing hot-swap .

Q3: What is the most common failure mode in GE PLC modules?

A3: Power supply aging (capacitor failure) and communication faults (Ethernet/Profibus dropouts).

Q4: What is GE's proprietary communication protocol for PLCs?

A4:  GE developed SRTP (Service Request Transport Protocol) for Ethernet communication with PLCs, succeeding the serial SNP/SNPX protocols. It uses default port 18245 .

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