Vaisala HMDW110 - Test Value Registers; Device Identification Objects; Table 55 Modbus Test Registers (Read-Only); Table 56 Device Identification Objects

A.4.4 Test Value Registers
Read the known test values from the test registers to verify the functionality of your Modbus
implementation.
Table 55 Modbus Test Registers (Read-Only)
Register
Number
(Decimal)
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
7940 1F03
hex
Text string test 7-character
ASCII string
Text string "-123.45"
A.4.5 Device Identification Objects
Table 56 Device Identification Objects
Object ID
(Decimal)
Object ID
(Hexadecimal)
Object Name Example Contents
0 00
hex
VendorName "Vaisala"
1 01
hex
ProductCode "HMDW110"
2 02
hex
MajorMinorVersion Software version (for example "2.2.0")
3 03
hex
VendorUrl "http://www.vaisala.com/"
4 04
hex
ProductName "Vaisala HUMICAPâ Humidity and
Temperature Transmitter HMDW110"
128 80
hex
SerialNumber
1)
Transmitter serial number (for
example, "D0710040")
129 81
hex
CalibrationDate
1)
Date of the factory calibration (for
example, "2009-08-07")
130 82
hex
CalibrationText
1)
Information text of the factory
calibration (for example, "Vaisala/
HEL")
1) Vaisala-specific device identification object.
HMDW110 User Guide M211726EN-D
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