PLC Extensions

CANopen® Interfaces for SIMATIC®
Industrial Automation Systems

The CANopen modules by HMS enable system integrators to easily and inexpensively integrate CANopen field devices with SIMATIC industrial automation equipment. The modules allow interaction between PROFIBUS or PROFINET controllers – such as the S7-1200 or ET200S device series – with CAN/CANopen fieldbus devices (gateways).

CANopen Extensions for PLCs

Siemens tool support

Fully integrated into the hardware catalog of TIA Portal or STEP 7. PLC function blocks available for fast integration.


CAN 2.0A mode

Supports implementation of any custom CAN based fieldbus protocol due to CAN 2.0A mode.


Cost-effective solution

Enables easy and inexpensive integration of CAN or CANopen based devices with Siemens equipment.

Learn more about the PLC expansions
Click to see typical application areas...

Typical applications areas

  • Control of motion devices in packaging machines or conveyor belts
  • Acquisition of encoder positions in wind turbines
  • Acquisition of measurement data from transducers, inclinometers or encoders
  • Control of hydraulic valves
  • Networking of medical devices
  • and more...

The 1 SI CANopen for the SIMATIC ET200®S modular I/O system and the CM CANopen module for the SIMATIC S7-1200® basic controller implement the HMS CANopen master technology in a compact format fully integrated with the SIMATIC hardware. They allow to directly extend SIMATIC automation solutions with CAN or CANopen based equipment making more expensive and space demanding PROFIBUS or PROFINET to CANopen gateways unnecessary. 

Both modules are supported by optimized and highly intuitive CANopen configuration tools that enable users to quickly generate all required configuration data for the CANopen network.
Due to the support for operation in transparent CAN 2.0A mode, system integrators have the possibility to implement any custom CAN based fieldbus protocol.

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Compare the features of the CM CANopen and the 1 SI CANopen module

Feature tables...


CAN Brochure

Download our latest CAN brochure as PDF file and learn more about the various products we offer for CAN and CAN FD...
Technical Services

Development services and OEM products

From brand-labelling, to HW/SW modification to completely custom designed products.

One product – many applications

HMS offers flexible solutions for a wide range of industries and applications – from industrial automation to automotive test systems.