Device net reads 0 ohms?

Checking a device net and I'm getting 0 ohms on a network.
I'm sure this has to be an open wire correct?
I've check my cables but don't see anything out of the ordinary.
How do I check for an open along the cable?

Thanks.

Zero ohms would be a short.
Between what conductors on the cable?
Are you getting error codes on the scanner module ? What are they?

Dhracer3:
Always maintain your Devicenet bible at hand:
http://www.cednebtrc.com/ftp_tshane/DNet Book of Knowledge.pdf