Table 44 Error codes on Modbus interface
Error code
register value
Corresponding error
1
Temperature measurement error. [44]
2
Humidity measurement error. [45]
4
Humidity sensor failure. [46]
8
Capacitance reference error. [47]
16
Ambient temperature out of range. [48]
32
Firmware checksum mismatch. [49]
64
Device settings corrupted. [50]
128
Additional configuration settings corrupted. [51]
256
Sensor coefficients corrupted. [52]
512
Main configuration settings corrupted. [53]
2048
Supply voltage out of range. [55]
8192
Non-volatile memory read/write failure. [57]
16384
Calibration certificate checksum mismatch. [58]
If several errors are active at the same time, the Modbus error code register contains the sum
of currently active error codes.
Refer to
Error messages in Insight software (page 67)
for more information about the error
states.
A.4.4 Test value registers
Read the known test values from the test registers to verify the functionality of your Modbus
implementation.
Table 45 Modbus test registers (read-only)
Register number
Register address
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
HMP60 and HMP110 Series User Guide
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