33
5 Connecting to the bus system
VEGADIF 85 • Profibus PA
53569-EN-230814
5
0
0
5
1
6
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6 7 8
Bus
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( )
(-)
1
Fig. 34: Electronics and connection compartment - single chamber housing
1 Voltage supply, signal output
2 For display and adjustment module or interface adapter
3 Selection switch for instrument address
4 For external display and adjustment unit
5 Ground terminal for connection of the cable screening
5.4 Switch-on phase
After connecting the instrument to power supply or after a voltage
recurrence, the instrument carries out a self-check:
•
Internal check of the electronics
•
Indication of a status message on the display or PC
Then the actual measured value is output to the signal cable. The
value takes into account settings that have already been carried out,
e.g. default setting.
Electronics and connec-
tion compartment