CAN Bus

CAN interface

• CODESYS 2.3 IDE  communication is supported for CAN1.

• Higher layer protocol is user programmable communication

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

• The PLCopen application can be downloaded via CAN1.

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

• 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.

• 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.

• CAN1 and CAN2 are CANopen compatible and user programmable

• For example CANopen, SAE J1939 or ISOBUS are available for both CANs.

• ISOBUS can be connected only to one CAN bus.

• It is recommended to connect ISOBUS to CAN2 bus and reserve CAN1 for CANopen (e.g. SW update and CODESYS communication).

CAN bus connection pins

This product has two CAN bus connections. CAN1 has duplicated pins, so it can be easily used for chaining the control units.

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