Vega VEGAFLEX 83 Modbus and Levelmaster protocol PFA in Bedienungsanleitung PDF herunterladen (Seite 24)

5 Connecting to power supply and bus system

VEGAFLEX 83 • Modbus and Levelmaster protocol

41838-EN-130314

power supply

MODBUS

IS GND

USB

1345

2off

( )

(

)

(-)

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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Vega VEGAFLEX 83 Modbus and Levelmaster protocol PFA in Bedienungsanleitung Seite 24