The instructions on the canberry website are not fully correct certainly for Stretch:https://www.industrialberry.com/?s=codesys&submit=Search
3 things need to be done: Line 3 one doesn't uncomment but one needs to insert the complete lines (also note that the word overlay is removed after the mcp2525-can0 and -can1
Insert the line dtoverlay=mcp2515-can0,oscillator=16000000,interrupt=22 for CanBerryNormal, Isolated and CanBerryDual
Insert the line dtoverlay=mcp2515-can1,oscillator=16000000,interrupt=25 only for CanBerryDual
After line 8, you must copy ALL the files in canberry-codesys folder (not the folder) to /home/pi
Also I2C needs to be activated even if you do not intend to use the RTC.
Once done it works as expected!