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

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.