Difference between Service data objects and process data object

[R_J]

Hi

Can anybody tell me what is the difference between SDO (Service Data Objects) & PDO (Process Data Objects).I am using 2 port PCI-CAN series 2 card.

If anybody knows the answer then please reply.

Thanking You

[Chris_R.]

Hello,

SDOs are master/slave communications mainly used for drive configuration, whereas PDOs are used for real-time control and data transfer. You can send a PDO peer-to-peer or broadcast to all the devices.

I hope this clears some things up!  Please post any other questions you may have.

[R_J]

Hello Chris

Thanks for the reply.

Can you explain more or suggest some link or documents on the SDO & PDO.

Regards,

Raman

[DirkW]

Hi,

See the online help file from our NI CANopen Library for LabVIEW for some basic informations about SDOs and PDOs.

More information should be available from the web.

DirkW