Features:
- One RS422/485 serial interface
- Freeport and Modbus RTU support
- Up to 1,000 m point-to-point cable length
The Siemens 6ES7241-1CH32-0XB0 is a SIMATIC S7-1200 CM 1241 communication module with one RS422/485 serial interface. Its 9-pole D-sub socket provides the physical connection for compatible serial devices. The module supports Freeport, Modbus RTU and USS communication according to the official Siemens data. It is intended to add serial data exchange to an S7-1200 station without changing the controller platform.
The specified supply range is 20.4-28.8 V DC, and the maximum current drawn from the 5 V backplane bus is 220 mA. Typical power loss is 1.1 W, and the enclosure degree of protection is IP20. Siemens states a maximum point-to-point cable length of 1,000 m for the supported interface conditions. Actual communication performance depends on the selected protocol, transmission parameters, cable design and network topology.
Select this order number when the project requires the RS422/485 version of the CM 1241 rather than the RS232C variant. Engineering should confirm the serial standard, connector assignment, protocol and device addressing before commissioning. Cable routing, shielding and termination must follow the requirements of the chosen RS422 or RS485 arrangement. The CPU configuration and communication blocks should also be verified in the applicable STEP 7 project.
RS422/485 applications built around the 6ES7241-1CH32-0XB0 can be supported with official documentation, sourcing assistance and interface-selection checks. Siemens records product phase-out from 1 November 2026; availability is verified for each request.
Siemens 6ES7241-1CH32-0XB0 CM 1241 Communication Module Manuals, Datasheets, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Siemens 6ES7241-1CH32-0XB0 CM 1241 Communication Module Specs
General
- ManufacturerSiemens
- Model6ES7241-1CH32-0XB0
- ConditionNew Original ready stock
- Product FamilySIMATIC S7-1200 CM 1241 Communication Modules
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Serial Interface:
- RS422/485 interface
- One 9-pole D-sub socket
- 1,000 m maximum cable length
- Diagnostic status indication
Supported Protocols:
- Freeport communication
- Modbus RTU master
- Modbus RTU device
- USS available as a library function
Installation Notes:
- 30 x 100 x 75 mm module dimensions
- 20.4-28.8 V DC permissible supply
- IP20 degree of protection
- Verify termination, addressing and serial mode