CM CanOpen and interrupts

Ixxat Support CAN/CANOpen PLC Extensions
#1

Hi

I’m using CM CANOpen in Transparent mode with S7-1200. I’m reading Received CAN messages each cycle times and sending CAN Messages using interrupt(as I need to send them on regular intervals).

Using this configuration It looks like that when interrupt happens while reading incoming CAN messages it destroys my received CAN messages.

Does anybody has suggestions whats going wrong? any refer to documents covering this problem? How to fix this?

Thanks in advance.

#2

Hello,

We do have another post with an example for using transparent CAN with TiA V13,

I would take a look at this. Are you able to send and receive data without using interrupts?