Profibus Cable

Conductor check

a)      Measure A signal line with shielding & B signal line with shielding. Make sure they are not connector. The resistance should be infinity.
 

b)      There are IN and OUT terminal on profibus connector. Every last device should be connected to IN terminal only. The terminator should set to ON.

c)      Measure the resistance from profibus connector. (pin3 and pin8) when the power is off. The resistance is around 110 ohm.