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Siemens 6ES7241-1CH31-0XB0 — PLC Communication Modules

Siemens 6ES7241-1CH31-0XB0 CM 1241 RS-422/485, spare part

MPN6ES7241-1CH31-0XB0

Siemens SIMATIC S7-1200, Communication module CM 1241, RS-422/485, 9-pin Sub-D socket, supports Freeport, USS, ASCII, 24 V DC, 155 g, IP20, spare part.

$88.90 – $109.00Ref. price · indicative, final on quote
Siemens 6ES7241-1CH31-0XB0 datasheet (PDF)
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

6ES7241-1CH31-0XB0 — Electrical
ParameterValue
Rated value (DC)24 V
Permissible range, upper limit (DC)28.8 V
Permissible range, lower limit (DC)20.4 V
Current consumption, max.240 mA; From L5+; logic
Power loss (typ.)1.2 W
6ES7241-1CH31-0XB0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-40 °C
IP protection degreeIP20
Operating temperature, horizontal install, min.0 °C
Operating temperature, horizontal install, max.55 °C
Operating temperature, vertical install, max.45 °C
Operating temperature, vertical install, min.0 °C
6ES7241-1CH31-0XB0 — Mechanical
ParameterValue
Width30 mm
Height100 mm
Depth75 mm

Product details

RS-422/485 communication for S7-1200

The Siemens 6ES7241-1CH31-0XB0 is a Communication Module CM 1241 for the SIMATIC S7-1200 system, providing a single RS-422/485 interface via a 9-pin Sub-D socket. It is designated as a spare part, meaning it maintains the same form, fit, and function as the original module for replacement in existing installations. The module draws up to 240 mA from the 24 V DC backplane supply (permissible range 20.4 V to 28.8 V) and dissipates 1.2 W typical. It supports Freeport protocol for user-defined serial communication, with USS and ASCII available as library functions.

Environmental and mounting envelope

Rated for horizontal installation from 0 °C to 55 °C and vertical installation from 0 °C to 45 °C, with a permissible temperature change of 3 °C per minute. The module operates at up to 95 % relative humidity (non-condensing) and at atmospheric pressures from 795 hPa to 1080 hPa.

Frequently asked questions

Is 6ES7241-1CH31-0XB0 compatible with Siemens S7-1200?

Yes, the CM 1241 is designed specifically for the SIMATIC S7-1200 system. It snaps onto the DIN rail and connects via the backplane bus, supporting Freeport, USS, and ASCII protocols over its single RS-422/485 interface.

Does 6ES7241-1CH31-0XB0 support Freeport protocol?

Yes, the module supports Freeport protocol for user-defined serial communication, with USS and ASCII also available as library functions.

Where can I buy 6ES7241-1CH31-0XB0?

This spare-part module is sourced to order against your BOM quantity. Availability and pricing are confirmed at quote time.

MPN
6ES7241-1CH31-0XB0