VEGA VEGABAR 81 Modbus and Levelmaster protocol - Operating Instructions - Manual (Page 67)

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10 Supplement
VEGABAR 81 • Modbus and Levelmaster protocol
46293-EN-131107
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 commands
FC3 Read Holding Register
With this command, any number (1-127) of holding registers can be read out. The start register,
from which the readout should start, and the number of registers are transmitted.