GE IC693CMM321 Series 90-30 Controllers
The GE IC693CMM321 is a serial communications module for the Series 90-30 PLC, supporting serial communication protocols such as Modbus RTU and ASCII. It features one RS-485 port and operates at baud rates up to 38.4 kbps. Typically used for connecting PLCs to HMIs, SCADA systems, and other serial devices in industrial automation. Compared to the IC693CPU374, which is a CPU module, the CMM321 focuses solely on communication, offering a dedicated solution for expanding serial connectivity without CPU functionality.
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