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DeviceNet is based on the same physical layer as CAN, however it has an object-oriented view of the process data and uses monitored point-to-point connections. The bus system is standardized through the ODVA (Open DeviceNet Vendor Association).

The DeviceNet master module and its software equipment enable operation of the M1 controller as DeviceNet master and DeviceNet slave, as well as simultaneous operation in two networks in combined master/slave mode.

The cyclic data is available to the application program via the process image. Acyclic accesses and status commands are possible via libraries for M-PLC and C/C++. The configuration is executed via the Bachmann SolutionCenter.

The DNM201 fieldbus master module allows the M1 controller to be used as bus master in DeviceNet networks. The DNM201 module is used to connect drives and input/output interfaces. The system bus of an M1 supports up to 8 separate networks, each with a maximum of 64 nodes that can be operated with different cycle times. Thus the bus architecture allows up to 512 DeviceNet stations (nodes) to be controlled individually.



  • 1 DeviceNet module for up to 64 nodes
  • 8 separate networks with max. 512 nodes 
    (requires 8 DNM201 modules in one M1 system)
  • Support of »Multi-Master« mode
  • 5-pin connector (in acc. with open DeviceNet standard)
  • Isolation voltage from DNM201 to case 100 V
  • Isolation voltage from DeviceNet bus to system voltages of the controller 500 V
  • Baud rates 125/250/500 kbit/s
  • Extensive status LEDs
  • Modes: 
    Master (multi-master capable), slave, master / slave
  • Module and network status LEDs (MS/NS)
  • Error detection: 
    Duplicate MAC-ID check, device heartbeat, device shutdown message
  • Automatic resumption of communication after failure

Approvals / Certificates

System overview