Configuration of the protocols CAN 2.0 A / CAN 2.0 B

The communication module CM598-CAN can be used to realize CAN bus based networks in combination with library ABB_CM598Can_AC500.library.

To enable the support for the desired protocol it must be appended to CM598-CAN.

Right-click “CM598_CAN (CM598-CAN)” in the device tree and select “Add device” in the context menu.

Window “Add object below: CM598_CAN_1” appears.
Select “CAN 2.0 A” or “CAN 2.0 B” from the list.

Parameterization

The CAN data transmission requires a buffer for the incoming data that can be read with function blocks of library ABB_CM598Can_AC500.library.

Right-click “CAN_2_0A_11_bit_identifier_ (CAN 2.0A)” or “CAN_2_0B_29_bit_identifier_ (CAN 2.0B)” and select “Add object”.
Select “Buffer for CAN 2A” for CAN 2.0A. Or select “Buffer for CAN 2B” for CAN 2.0B from the list.
Double-click on “Buffer_for_CAN_2A (Buffer for CAN2A)” or “Buffer_for_CAN_2B (Buffer for CAN2B)” in the device tree to open the “Buffer configuration” in the editor window.

The following parameters are available:

Parameter	Default value	Value	Description
Identifier	0	CAN 2A: 0 ... 2047 CAN 2B: 0 ... 536870911	The value of the CAN identifier that is compared with the identifier of the incoming telegrams. The telegrams will be added to the buffer if the identifier matches.
Number of receive buffers	1	1 ... 16	The size of the buffer in number of telegrams.
Behavior on receive buffer overflow	Overwrite	Overwrite	The oldest telegram in the buffer is overwritten by the incoming telegram.
Behavior on receive buffer overflow	Overwrite	Discard	Incoming telegrams are discarded as long as the buffer is full.
Enable triggering of IEC task	No	No	Disables the triggering of the execution of the related IEC task.
Enable triggering of IEC task	No	Yes	Enables the triggering of the execution of the related IEC task as soon as a CAN frame with the specified CAN-ID arrives ⮫ “Triggering of event tasks with CAN-IDs”.