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6ES7241-1CH32-0XB0

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Siemens 6ES7241-1CH32-0XB0 is a SIMATIC S7-1200 CM 1241 communication module that adds an RS422/485 serial interface for Freeport, Modbus RTU and USS communication.
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Technical specifications for 6ES7241-1CH32-0XB0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7241-1CH32-0XB0
  • Product Family:
    Siemens Simatic S7-1200
  • Product Type:
    CM 1241 Communication Module
  • Stock:
    1
  • Supply Voltage:
    20.4-28.8 V DC
  • Serial Interface:
    RS422/485
  • Connector:
    9-pole D-sub socket
  • Protocols:
    Freeport; Modbus RTU; USS
  • Cable Length:
    1,000 m max.
  • Backplane Bus Current:
    220 mA max. at 5 V DC
  • Power Loss:
    1.1 W typical
  • Protection:
    IP20
  • Weight:
    0.331 lbs (0.15 kg)
  • Estimated shipping dimensions:
    8.80 x 10.70 x 5.70 cm
  • Tariff Code:
    85176200
  • Country of origin:
    China
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Interface Protocols Installation

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, LinkImportant 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
Description
The 6ES7241-1CH32-0XB0 is a SIMATIC S7-1200 CM 1241 serial communication module with one RS422/485 interface presented through a 9-pole D-sub socket.

Designed for a rated 24 V DC supply, the 6ES7241-1CH32-0XB0 accepts 20.4-28.8 V DC, draws up to 220 mA from the 5 V DC backplane bus and has a typical power loss of 1.1 W.

The 6ES7241-1CH32-0XB0 supports Freeport, ASCII library functions, Modbus RTU master and device operation, and USS library functions. Siemens specifies a maximum point-to-point cable length of 1,000 m and diagnostic status indication.

Siemens records the 6ES7241-1CH32-0XB0 as a PM300 Active Product with product phase-out from 1 November 2026. Verify interface mode, protocol, cable design, addressing and the controller project before installation.
Alternative Names
6ES7241 1CH32 0XB0 6ES72411CH320XB0 6ES7241 -1CH32-0XB0 Siemens 6ES7241 1CH32 0XB0 SIEMENS 6ES72411CH320XB0 SIMATIC S7 1200 CM 1241 RS422 RS485 CM 1241 Serial Communication Module S7 1200 Modbus RTU Communication Module
Technical notes
6ES7241-1CH32-0XB0 adds one RS422/485 port to a SIMATIC S7-1200 station and supports Freeport and Modbus RTU. Confirm the selected serial mode, protocol settings and cable topology before commissioning.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is Siemens 6ES7241-1CH32-0XB0?
6ES7241-1CH32-0XB0 is a Siemens SIMATIC S7-1200 CM 1241 Communication Modules product described as a CM 1241 Communication Module.
What does 6ES7241-1CH32-0XB0 provide?
6ES7241-1CH32-0XB0 provides one RS422/485 serial interface according to the official Siemens documentation.
Which system uses 6ES7241-1CH32-0XB0?
6ES7241-1CH32-0XB0 is intended for the Siemens SIMATIC S7-1200 platform; verify the target CPU or station configuration before installation.
Which key specifications apply to 6ES7241-1CH32-0XB0?
6ES7241-1CH32-0XB0 is specified with Freeport, Modbus RTU and USS support with a maximum 1,000 m point-to-point cable.
What is the lifecycle status of 6ES7241-1CH32-0XB0?
Siemens lists 6ES7241-1CH32-0XB0 as a PM300 Active Product and states product phase-out from 1 November 2026.
Is official documentation available for 6ES7241-1CH32-0XB0?
The Manuals tab provides Siemens official documentation for 6ES7241-1CH32-0XB0 as its first link.
What should be checked before installing 6ES7241-1CH32-0XB0?
For 6ES7241-1CH32-0XB0, verify interface mode, protocol settings, termination and project configuration.
How can I request a quote for 6ES7241-1CH32-0XB0?
For a 6ES7241-1CH32-0XB0 quotation, send the required quantity and application details to Apter Power for stock and lead-time confirmation.