6ES7241-1CH30-1XB0 NEW ORIGINAL

The Siemens 6ES7241-1CH30-1XB0 is a CB 1241 RS485 communication board from the SIMATIC S7-1200 series, designed to add serial communication capability to S7-1200 PLCs. This compact signal board plugs directly into the front of the CPU, providing a single RS485 (2-wire half-duplex) interface for point-to-point communication with a wide range of industrial devices . Unlike the larger CM 1241 modules, the CB 1241 is a space-saving board that mounts directly onto the CPU without requiring additional cabinet space. It is ideal for applications requiring Modbus RTU, USS, or Freeport communication with third-party equipment such as variable frequency drives, sensors, and legacy controllers .