Hello. We are commissioning some FF devices at rafinery. We have a problem with one of a FF device(ROSEMOUNT 3051 PT) who is connected at barrier(PEPPERL + FUCHS MOD.F2D0-FB-EX4-CG). The situation is this: We have a FF segment whit a trunk of 80m and 4 FF devices connected on 4 spurs with a length about 45 meters each. When we connect with a communicator 475 we see only 3 devices.We don't see one device, but this device is working..So we have measured the voltage on this device(11,80 VDC).We have also connected on a cable at the end of this intstrument with a communicator and have seen the other 3 devices.What could be a problem? A cable length (it's about 55m)? Any ideas it's kind of a urgent? THX
Fieldbus Foundation problem
- Thread starter juzeko
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