Features:
- One RS232C serial interface
- Freeport and Modbus RTU support
- 9-pole D-sub pin connector
The Siemens 6ES7241-1AH32-0XB0 is a SIMATIC S7-1200 CM 1241 communication module with one RS232C serial interface. A 9-pole D-sub pin connector provides the connection to compatible serial equipment. Official Siemens data identifies Freeport and Modbus RTU among the supported communication options. The module adds point-to-point serial communication to a compatible S7-1200 controller station.
The unit operates from a specified 20.4-28.8 V DC supply range and draws up to 200 mA from the 5 V backplane bus. Typical power loss is 1.1 W, and the module has IP20 protection. Siemens specifies a maximum cable length of 10 m for this RS232C interface. Communication settings must be coordinated with the connected device, including data format, baud rate and protocol parameters.
This order number should be selected specifically for projects that require RS232C rather than RS422/485 communication. Confirm the connector pin assignment, cable type, protocol and supported peer device before wiring the module. The S7-1200 CPU and the communication program must be configured for the intended serial exchange. Installation should remain within the official cable-length, supply and enclosure limits.
When the 6ES7241-1AH32-0XB0 is required for RS232C communication, Apter Power can help review official data, cabling needs and sourcing options. Siemens states product phase-out from 1 November 2026; supply and lead time require confirmation.
Siemens 6ES7241-1AH32-0XB0 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 6ES7241-1AH32-0XB0 CM 1241 Communication Module Specs
General
- ManufacturerSiemens
- Model6ES7241-1AH32-0XB0
- 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:
- RS232C interface
- One 9-pole D-sub pin connector
- 10 m maximum cable length
- Diagnostic status indication
Supported Protocols:
- Freeport communication
- ASCII available as a library function
- Modbus RTU master
- Modbus RTU device
Installation Notes:
- 30 x 100 x 75 mm module dimensions
- 20.4-28.8 V DC permissible supply
- IP20 degree of protection
- Verify connector pinout and serial parameters