Vaisala HMP7 - Test Value Registers; Device Identification Objects; Table 79 Error Codes in Register 0203; Table 80 Modbus Test Registers (Read-Only)

Table 79 Error codes in register 0203
hex
Bitmask Error message Severity
0000
hex
Status OK
0001
hex
Temperature measurement error Error
0002
hex
Humidity measurement error Error
0004
hex
Humidity sensor failure Error
0008
hex
Capacitance reference error Error
0010
hex
Ambient temperature out of range Error
800000
hex
Sensor heater failure Warning
A.4.4 Test value registers
Read the known test values from the test registers to verify the functionality of your Modbus
implementation.
Table 80 Modbus test registers (read-only)
Register
number
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
7940 1F03
hex
Text string test text Text string "-123.45"
1F04
hex
1F05
hex
1F06
hex
A.5 Device identification objects
Table 81 Device identification objects
Object ID Object ID
(hexadecimal)
Object name Example contents
0 00
hex
VendorName "Vaisala"
1 01
hex
ProductCode "HMP4"
HMP Series with MMP8 and TMP1 User Guide M212022EN-F
108