Register Name
Register Number
PV
2102
SV
2104
TV
2106
QV
2108
Status
2200
PV
2202
SV
2204
TV
2206
QV
2208
Unit Codes for Register 104, 108, 112, 116
Unit Code
32
33
40
41
42
43
44
45
46
47
48
49
111
112
113
11.4 Modbus RTU-Befehle
FC3 Read Holding Register
Mit diesem Befehl wird eine beliebige Anzahl (1-127) von Holding-Registern ausgelesen. Es werden
das Startregister, ab welchem gelesen werden soll und die Anzahl der Register übertragen.
Parameter
Request:
Function Code
Start Address
Number of Registers
VEGAFLEX 86 • Modbus- und Levelmaster-Protokoll
Type
DWord
DWord
DWord
DWord
DWord
DWord
DWord
DWord
DWord
Measurement Unit
Degree Celsius
Degree Fahrenheit
US Gallon
Liters
Imperial Gallons
Cubic Meters
Feet
Meters
Barrels
Inches
Centimeters
Millimeters
Cubic Yards
Cubic Feet
Cubic Inches
Note
Primary Variable in Byte Order DCBA (Little Endian)
Secondary Variable in Byte Order DCBA (Little Endian)
Third Variable in Byte Order ABCD DCBA (Little Endian)
Quarternary Variable in Byte Order DCBA (Little Endian)
See Register 100
Primary Variable in Byte Order BACD (Middle Endian)
Secondary Variable in Byte Order BACD (Middle Endian)
Third Variable in Byte Order BACD (Middle Endian)
Quarternary Variable in Byte Order BACD (Middle Endian)
Length
Code/Data
1 Byte
0x03
2 Bytes
0x0000 to 0xFFFF
2 Bytes
1 to 127 (0x7D)
11 Anhang
89