4 modbus rtu-befehle, Fc3 read holding register – VEGA VEGABAR 83 Modbus and Levelmaster protocol - Operating Instructions Benutzerhandbuch

Seite 72

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72

10 Anhang

VEGABAR 83 • Modbus- und Levelmaster-Protokoll

46295-DE-131030

Register Name

Register Number

Type

Note

SV

2104

DWord

Secondary Variable in Byte Order DCBA (Little En-

dian)

TV

2106

DWord

Third Variable in Byte Order ABCD DCBA (Little En-

dian)

QV

2108

DWord

Quarternary Variable in Byte Order DCBA (Little En-

dian)

Status

2200

DWord

See Register 100

PV

2202

DWord

Primary Variable in Byte Order BACD (Middle Endian)

SV

2204

DWord

Secondary Variable in Byte Order BACD (Middle En-

dian)

TV

2206

DWord

Third Variable in Byte Order BACD (Middle Endian)

QV

2208

DWord

Quarternary Variable in Byte Order BACD (Middle En-

dian)

Unit Codes for Register 104, 108, 112, 116

Unit Code

Measurement Unit

32

Degree Celsius

33

Degree Fahrenheit

40

US Gallon

41

Liters

42

Imperial Gallons

43

Cubic Meters

44

Feet

45

Meters

46

Barrels

47

Inches

48

Centimeters

49

Millimeters

111

Cubic Yards

112

Cubic Feet

113

Cubic Inches

10.4 Modbus RTU-Befehle

FC3 Read Holding Register

Mit diesem Befehl kann eine beliebige Anzahl (1-127) an Holding -Registern gelesen werden. Es

wird das Startregister, ab welchem gelesen werden soll und die Anzahl der Register übertragen.

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