TPDO1 that begins with 0x4?

2 years ago in IQANdesign • updated by 2 years ago • 3

I'm having issues communicating with an CAN Open input module, TPDO1 states the COB ID has to start with 0x4? See below image.

When I insert this into IQAN I get this error:

What am I doing wrong?

Vote

Hi, have you tried to just use 0x180+node id?

This does not appear to work on this module manufactured by Seneca (ZC-24DI). The EDS file also states the same as the data sheet:

The full COB-ID 0x40000180 cannot be entered as the CAN identifier, even with a 29 bit identifier, this does not fit.

The COB-ID is a 32 bit value that may contain additional control bits (although they are usually zero on most nodes)

There is a good description here; CAN in Automation (CiA): PDO protocol (can-cia.org), see the sidebar "The COB-ID is not the CAN-ID".

So as Arno suggested, you should use 0x180+Node ID as the identifier.