4 comandi rtu modbus, Fc3 read holding register – VEGA VEGAPULS 66 (≥ 2.0.0 - ≥ 4.0.0) enamel Modbus and Levelmaster protocol Manuale d'uso

Pagina 66

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66

11 Appendice

VEGAPULS 66 smaltato • Protocollo Modbus e LevelMaster

41368-IT

-121116

Register Name

Register Number

Type

Note

Status

2100

DWord

See Register 100

PV

2102

DWord

Primary Variable in Byte-Reihenfolge DCBA (Little En-

dian)

SV

2104

DWord

Secondary Variable in Byte-Reihenfolge DCBA (Lit-

tle Endian)

TV

2106

DWord

Third Variable in Byte-Reihenfolge ABCD DCBA (Lit-

tle Endian)

QV

2108

DWord

Quarternary Variable in Byte-Reihenfolge DCBA (Lit-

tle Endian)

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

11.4 Comandi RTU Modbus

FC3 Read Holding Register

Tramite questo comando è possibile leggere un numero qualsiasi (1-127) di holding register. Vengo-

no trasmessi il registro iniziale, a partire dal quale va effettuta la lettura, e il numero di registri.

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