Panametrics Aurora H2O, User Manual

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Appendix A. MODBUS RTU/TCP Communications
8 Aurora H2O User’s Manual
A.3 Modbus Registers
All registers denoted with a bullet (•) in the Read-Only column are read-only registers and should be read with the
function “Read Input Registers.” All other registers can be read and written with “Read Holding Registers” or “Write
Multiple Registers.”
Note: The Modbus Register Address map supported by Aurora H2O is shown in Table 7 below.
Functio
n Parameter Description Range/State
Add
r Data Type
Rea
d
Onl
y
System
Status
1
Status
Register
0 Integer
•
Status
Register,
Latched
Write 0 to clear 100
0
Integer
Display Data/Plot Select Plot or Data Display view 0 = Data View
1-60 = Plot view
duration, in minutes
1010 Integer
Primary Units Measurement unit to display Reg. address of Meas. 1100 Integer
Primary
Decimals
# of decimal places to display Measurement
dependent
1110 Integer
Alt 1 (Left)
Units
Measurement unit to display Reg. address of Meas. 120
0
Integer
Alt 1 (Left)
Decimals
# of decimal places to display Measurement
dependent
1210 Integer
Alt 2 (Right)
Units
Measurement unit to display Reg. address of Meas. 130
0
Integer
Alt 2 (Right)
Decimals
# of decimal places to display Measurement
dependent
1310 Integer
Function