VEGA SOLITRAC 31 Profibus PA - Manual (Page 26)

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5 Connecting to power supply
SOLITRAC 31 • Profibus PA
43834-EN-131119
Information:
For example, a radial connection would be also possible as an alter-
native. Take note of the polarity.
The selection of the two terminal pairs is individual.
5.5 Set instrument address
An address must be assigned to each Profibus PA instrument. The
approved addresses are between 0 and 126. Each address must
only be assigned once in the Profibus PA network. The sensor is only
recognized by the control system if the address is set correctly.
When the instrument is shipped, address 126 is adjusted. This ad-
dress can be used for function test of the instrument and for con-
nection to a Profibus PA network. Then address must be changed to
integrate additional instruments.
The address setting is carried out either via:
•
The address selection switch in the electronics compartment of
the instrument (address setting via hardware)
•
The display and adjustment module (address setting via software)
•
PACTware/DTM (address setting via software)
The hardware addressing is effective if an address <126 is adjusted
with the address selection switches on the instrument. Hence the
software addressing is no longer effective, the adjusted hardware
address is valid.
2 1 3
1
1
2 4 5 6
22
11
12
21 22 19 20 18 17 14 13 16 15 12
9 10 11
Fig. 16: Address selection switch
1 Addresses <100 (selection 0), addresses >100 (selection 1)
2 Decade of the address (selection 0 to 9)
3 Unit position of the address (selection 0 to 9)
The software addressing is only effective if address 126 or higher is
adjusted on the instrument with the address selection switches.
The addressing procedure is described in the operating instructions
manual "Display and adjustment module.
Instrument address
Hardware addressing
Software addressing