CAN Bus

CAN interface

   

Supported CAN amount:

 

Bit rate:

All interfaces support bit rates 50, 125, 250, 500, 800, 1000 kbit/s

CAN interface features:

  • CAN1 has duplicated pins, so it can be easily used for chaining the control units.

  • It is possible to connect the internal termination resistor in CAN1. For more information refer to section System Topologies.

  • CODESYS 2.3 IDE  communication is supported for CAN1 (PLCopen application can be downloaded via CAN1)

  • All interfaces can be configured as listen only mode. An exception is CAN1, which is in boot up normal mode because it is used for CODESYS communication.

  • The physical interface of CAN is according to ISO 11898 and CAN 2.0B protocol

  • 11-bit and 29-bit message receive and transmit are supported

  • Transmitting of remote frames is supported in all CAN interfaces

  • Receiving one remote frame is supported. This is received for the control unit's own node guard functionality.

 

Cabling instructions:

See section CAN Bus Cabling

 

 

CAN bus connection pins

The CAN communication pins are located in the control unit's AMP35 connector as follows:

 

Designation

Pin number

CAN1 interface, system interface

user programmable communication

X1.5 (CAN1 H)

X1.6 (CAN1 H)

X1.17 (CAN1 L)

X1.18 (CAN1 L)

X1.19 (CAN1 L terminator)