Compact Switch Modules (CSM)

More connectivity to SIMATIC at a low cost

Integrate machines into existing plant using our unmanaged Compact Switch Modules (CSM).

Select the right CSM for your needs

TIA Selection Tool

Hybrid Event, Nov 23 - Nov 25

SPS 2021 in Nuremberg – There for you

Come to our booth at the SPS in Nuremberg from November 23 to 25, 2021, where you can network with others in person, check out exhibits, and find solutions to problems. All of this will take place, of course, in line with a safety and hygiene concept that complies with the latest regulations.


If you can’t attend in person, simply participate online and take a virtual tour of our 3D showroom, attend lectures and presentations, and talk to our experts.


Directly select and order via the Industry Mall

Product family

Compact Switch Modules (CSM) in detail

Discover what you can achieve with our Compact Switch Modules (CSM).
CSM 1277
CSM 377

Port characteristics (max.)

electrical / optical

4x RJ45
4x RJ45
4x RJ45
Temperature range
0 °C to +55 °C
0 °C to +60 °C
0 °C to +60 °C
Design / Protection class
Plastic housing / IP20
Plastic housing / IP20
Plastic housing / IP20
Transmission rate
10/100 Mbit/s
10/100 Mbit/s
10/100 Mbit/s
Software coverage
Special features
Logic module LOGO!
SIMATIC S7-300, S7-mEC, ET 200M
Industry Mall

Small, compact and low-cost

Use our Compact Switch Modules (CSM) to increase the number of interfaces directly on the SIMATIC S7, ET 200M or LOGO! logic modules at low cost – and increase the number of potential connections at the same time. 

Typical uses

A space-saving design that’s just right for industrial use makes the CSM ideal for use in all control panel applications. The LED status display on the device helps with fast and easy diagnostics.

CSM in the Industry Mall

Select and order now

FastConnect – a cabling system gets the hang

Structured cabling is the basis of an industrial bus system or network and must fulfill much higher requirements than cabling in the office area. Stringent demands are placed on the installation of cables in the industrial environment. Siemens offers FastConnect, a system that fulfils all these requirements: On-site assembly – quick, easy and error-free.

The fastest way to the experts

Proposed solutions for your queries and direct access to our experts in Technical Support

Service offers

To remain competitive over the long term, companies in industry must ensure – and ideally increase – the availability and productivity of  machines and plants. As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise.

Well trained for excellent handling

Receive standardized or individual expertise directly from the manufacturer – with training centers in more than 60 countries