Communication Module RS-485

The Siemens 6ES7241-1CH32-0XB0 is a Communication Board (CB 1241 RS485) designed for SIMATIC S7-1200 controllers. It provides reliable serial communication via an RS-485 interface, supporting both point-to-point and multipoint connections.

• Interface: RS-485 with screw-type terminal block

• Supported Protocols: Freeport, 3964(R), Modbus RTU (master/slave), and USS (as a library function)

• Maximum Cable Length: 1000 meters

• Maximum Telegram Length: 1 kbyte (Freeport, 3964(R))

• Modbus Address Range: 1 to 49,999

• Power Supply: 5 V DC from backplane bus, typical current 50 mA, typical power loss 1.5 W

• Protection Class: IP20

• Operating Temperature: -20°C to +60°C (horizontal), -20°C to +50°C (vertical)

• Humidity: Up to 95% (non-condensing)

• Dimensions: 38 x 62 x 21 mm

• Weight: Approx. 40 g

• Diagnostics: LED status indication and diagnostic functions

This board is ideal for integrating S7-1200 controllers into industrial automation systems requiring robust serial communication.