canopen length limitation????

[rajkumar.r]

sir,

   i am using canopen encoder, i need to communicate with encode for distance range of upto 20m, the cable which i am using is belden cable 3042A as specified by NI... but communication with encoder is been possible for me only upto 5m...

                                 while i am trying to extend the length of cable,the datas are not coming........ was there any limitation of length in belden cable or for canopen communication.???????????/... i am using a baud rate of 50Kbit/sec...

please help me in this regard....

[Nick_D]

Hey Raj,

I see you're communicating at 50kbits/sec. If you take a look at this following KB article: What Is The Maximum Distance an Instrument Can Be From The Bus? You seem to be within the specs.

Can you let me know if this helps?

Regards,

Nick D.

[DirkW]

Did you check to use the right termination on both cable ends? Check the manual for more information.

DirkW

[JB]

I can only second DirkW : like mentionned in a previous answer, you must use appropriate termination resistors...