Softing BC-600-PB, Manual

Page: 24 / 44

Connection to PROFIBUS Manual
Page 24 © 2013
The topology scan determines the sequence and distances of all passive bus
stations (slaves). This feature requires correct bus cabling, a very good signal
quality, and a connection point located directly at the beginning or end of the
bus.
Both features can only be used during shutdown of the installation. The D-sub
cable BC-600-PB-CB-DSUB-2 which is included in the standard scope of
supply must be used. As long as communication is detected on the bus, i.e. at
least one device is an active master, the functions are disabled. If necessary,
disconnect every single active device (PLC, MPI and, if necessary, diagnostic
repeaters) from the power supply or the bus. If an active device is at the end of
the bus you want to test, its PROFIBUS connector needs to be unplugged and
connected directly to the PROFIBUS Tester 4. The bus termination in the
device connector will then be powered by the PROFIBUS Tester 4.
w/o
adaptor
cable
Connection points
MPI Operator Panel
Remote I/O
PLC
Disconnect from bus
Remote I/O
D-sub
D-sub cable „Standard“
BC-600-PB-CB-DSUB-2
Fig. 17: Connection points for topology scan