Vaisala HMP3 - Test Value Registers; Table 61 Modbus Test Registers (Read-Only)

Bitmask Error message Severity
0008
hex
Capacitance reference error Error
0010
hex
Ambient temperature out of range Error
800000
hex
Sensor heater failure Warning
A.4.5 Test value registers
Read the known test values from the test registers to verify the functionality of your Modbus
implementation.
Table 61 Modbus test registers (read-only)
Register number
(decimal)
Register address
(hexadecimal)
Register
description
Data format Test value
7937 1F00
hex
Signed integer
test
16-bit integer -12345
7938 1F01
hex
Floating point
test
32-bit float -123.45
1F02
hex
7940 1F03
hex
Text string test text Text string
"-123.45"
1F04
hex
1F05
hex
1F06
hex
Appendix A – Modbus reference
87
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