Vega VEGAFLEX 83 Modbus and Levelmaster protocol PFA in Manual de usuario Pagina 24

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5 Connecting to power supply and bus system
VEGAFLEX 83 • Modbus and Levelmaster protocol
41838-EN-130314
+
+
power supply
MODBUS
D0
D1
IS GND
USB
1
2
1345
2off
on
( )
(
)
(-)
(-)
Fig. 16: Connection compartment
1 USB connection
2 Slideswitchforintegratedterminationresistor(120Ω)
Terminal Function Polarity
1 Voltage supply +
2 Voltage supply -
3 Modbus-Signal D0 +
4 Modbus-Signal D1 -
5 Function ground with installa-
tion according to CSA
5.4 Switch-on phase
After VEGAFLEX 83 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 briey 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.
Connection compartment
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