I/O modules - System description

  • Parameterisable input / output functions.
  • Direct connection of hydraulic valves or joysticks.
  • Safe M12 connectors or central connector.
  • CAN interface with CANopen protocol.
  • e1 type approval of the German Federal Office for Motor Traffic.

I/O modules for mobile applications
Decentralised I/O modules connect binary and analogue sensors and actuators to the controller via the CAN bus. The advantage over conventional direct wiring: the CAN modules are mounted just where the signals are provided. This considerably reduces the number of cables. Furthermore, I/O modules provide additional functions for signal preprocessing. Whether in the control cabinet, the cabin or directly in the field: the various types and connection technologies provide solutions for almost all applications. The normalised CANopen protocol facilitates the networking of different CAN bus participants. For the normalisation of device and application-specific parameters device profiles are used. The standardised communication profile defines, among others, the network configuration, the transmission of process data and the synchronous exchange of data between network participants. The profile DSP 401 is used for digital and analogue input / output modules. The device parameters are set via the object directory using “Service Data Objects”. Additionally, the time-critical process data (Process Data Objects, PDO) of the sensors and actuators can be exchanged via the object directory. CAN objects also monitor the participants and the network. The “Nodeguarding Object” or “Heart Beat” monitors whether a participant responds within a specified time. “Emergency Objects” are transmitted for the display of hardware and software errors. The input / output functionality of the module is listed by means of application objects which are described in the object directory of the device.

More information

System overview — I/O modulesProduct Innovations — I/O modules


The parameters of CompactModules can be set to the application in a versatile manner.


The SmartModules are incorporated into the same robust metal housing as the mobile controllers.