TPDO1 that begins with 0x4?
Kevin 7 months ago in IQANdesign • updated by Gustav Widén (System support) 7 months 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?
Customer support service by UserEcho
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.