Overview
The GE IC200CMM020‑AA is a serial communications module from the VersaMax I/O family. It acts as a Modbus RTU Master interface, allowing a VersaMax I/O station to control and communicate with Modbus slave devices via one RS‑485 port.
General Information
Part Number: IC200CMM020‑AA
Manufacturer: GE (General Electric)
Brand / Country of Origin: GE / USA
Series: IC200CMM (Serial Communications)
Type: Modbus RTU Master Module
Mounting: Rack or I/O station chassis in VersaMax system
Function: Provides one RS‑485 serial port interface, managing up to 247 Modbus RTU slave devices
Power Specifications
Supply Voltage: Via VersaMax backplane (internal 5 V and 3.3 V supplies)
Typical Consumption: 460 mA at 5 V, 5 mA at 3.3 V
External Power Out: Provides ~100 mA at 5 V for external devices, limited to 200 mA
Communication & Interface
Interface Type: RS‑485 (15‑pin “D” connector), supports half‑ and full‑duplex operation
Baud Rates: 1200, 2400, 4800, 9600, and 19200 bps
Station Support: Up to 2 modules per VersaMax I/O station; supports up to 247 slave devices on the Modbus bus
Environmental
Operating Temperature: −20 °C to +70 °C
Storage Temperature: −40 °C to +85 °C
Humidity: Up to 95% RH, non‑condensing
Protection Rating: IP20 when installed in enclosure
Cooling: Passive via natural convection
Dimensions & Weight
Dimensions (L × W × H): 110 x 66.8 x 50 mm
Weight: Approx. 0.14 kg
