Vaisala Indigo500 Series - A.4 Modbus Registers; A.4.1 Measurement Data Registers

Table 34 Device identification objects
Object id (decimal) Object id (hexadecimal) Object name Example contents
0 00
hex
VendorName “Vaisala”
1 01
hex
ProductCode "INDIGO5X0"
2 02
hex
MajorMinorVersion "1.2.3"
Software version of the device.
3 03
hex
VendorUrl “http://www.vaisala.com/”
4 04
hex
ProductName "Indigo5X0 Transmitter"
128 80
hex
SerialNumber
1)
“K0710040”
1) Vaisala-specific device identification object.
A.4 Modbus registers
Registers are numbered in decimal, starting from 1. Register addresses in actual Modbus
messages (Modbus Protocol Data Unit (PDU)) are in hexadecimal and start from zero. Register
number 1 corresponds to address 0
hex
in the actual Modbus message.
Reading the wrong register(s) may result in correct-looking values.
Check the reference documentation of your Modbus host (PLC) to verify which
notation it uses for Modbus register addresses.
CAUTION!
A.4.1 Measurement data registers
Measurement data registers in this appendix can be used only for transmitters with optional
barometer module and transmitters using analog input, using unit ID 240.
Table 35 Floating point measurement data registers (read-only)
Register
number
Address Register description Data format Unit
43 002A
hex
Barometric pressure 32-bit float hPa
002B
hex
53 0034
hex
Actual current level of analog
input (mA)
32-bit float mA
0035
hex
Indigo510, Indigo520 User Guide M212287EN-N
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