how can I resolve a bus error in can?

[Cuco]

I am trying to scan CAN messages with the bus monitor in the software NI-CAN 1.5 but always I have an error on the communication Bus. I just put voltage on the CAN board (2 ports low speed) and a warning appear on the Bus monitor I don't know why, also I am using a harness to communicate with UUT by Teststand and the functioning is good but in the bus monitor not. So my question is if you have another Can Bus Analizer or if this error is easy to resolve and HOW?....

[tstelzer]

This warning means that the CAN device has entered "Error Passive state", which means it has exceeded the allowable number of errors on the CAN bus. This may occur if your cabling is not correct. Check the NI-CAN User Manual, Appendix E "Cabling Requirements for Low-Speed CAN" for correct cabling. Make sure that bus power is applied (V+ = +8 to +27V DC), and that none of the other cable lines are shorted, or interrupted.

[pavanb]

Also kindly install the latest driver 1.6, http://digital.ni.com/softlib.nsf/MainPage?ReadForm&node=132010_US