VEGA VEGAFLEX 81 Profibus PA - Manual (Page 31)

31
5 Connecting to power supply
VEGAFLEX 81 • Profibus PA
44217-EN-130910
5
0 0
5
1
6
2
7 3 8
4
9 0
5
1
6
2
7 3 8
4
9 1
0
1
6 7 8
Bus
2
1
3
1 2 +
( ) (-)
Fig. 26: 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.
5.9 Switch-on phase
After VEGAFLEX 81 is connected to the bus system, the instrument
carries out a self-test for approx. 30 seconds. The following steps are
carried out:
•
Internal check of the electronics
•
Indication of the instrument type, hardware and software version,
measurement loop name on the display or PC
•
Indication of the status message "F 105 Determine measured
value" on the display or PC
•
Status byte goes briefly to fault value
As soon as a plausible measured value is found, it is outputted to the
signal cable. The value corresponds to the actual level as well as the
settings already carried out, e.g. factory settings.
Software addressing