Copyright 2013 Baker Hughes Company.
120 | DPI
620G Instruction Manual–English
Chapter
11.
Profibus® PA
1. Modem - this provides access to the following functions:
a. Properties (Displays modem profile).
b. Re-Scan
2. Descriptor/Address Change - which includes:
a. Set Descriptor.
b. Set Address.
3. Boot Operational Function (BOF) class change - which includes:
a. Restart Device.
b. Properties (Displays device profile).
c. Remove
11.9 Troubleshooting Connection Problems
If no device is found when performing scan check:
1. Field wiring - verify electrical segment connections are in accordance with the specific
manual supplied with the field device and segment coupler / power supply.
2. The loop is not suffering from interference due to an unstable voltage supply from the
segment power supply and / or electrical interference.
3. The required termination is present in the network.
4. The internal power supply is switched on (if required).
Some bridging devices / LAS implementations provide an optimization whereby some address
ranges are not scanned. This may result in individual device not being found.
After setting address, it may take some time for the device and the Link Active Scheduler (LAS)
to synchronize information including address, identity and protocol timing information.
11.10 Profibus® Application – Communication
11.10.1 Device Focus View
In this view, the specific information of the device is shown i.e.
•
Device Descriptor.
•
Device Type.
•
Block List with Target / Actual Mode.
