Vaisala DRYCAP DMT143 - Device Identification Objects; Table 30 Modbus Test Registers (Read-Only); Table 31 Device Identification Objects; Test Value Registers

A.4.4 Test Value Registers
Read the known test values from the test registers to verify the functionality of your Modbus
implementation.
Table 30 Modbus Test Registers (Read-Only)
Register Number
(Decimal)
Address
(Hexadecimal)
Register
Description
Data Format Value
7937 1F00
hex
Signed integer 16-bit integer -12345
7938 1F01
hex
Floating point 32-bit float -123.45
7940 1F03
hex
Text string 7-character ASCII
string
"-123.45"
A.4.5 Device Identification Objects
Table 31 Device Identification Objects
Object Id
(Decimal)
Object Id
(Hexadecimal)
Object Name Example Contents
0 00
hex
VendorName “Vaisala”
1 01
hex
ProductCode DMT143
2 02
hex
MajorMinorVersion Software version (for example “1.4.2”)
3 03
hex
VendorUrl “http://www.vaisala.com/”
4 04
hex
ProductName Vaisala DRYCAPâ Dewpoint
Transmitter DMT143
5 05
hex
ModelName Configuration code (for example
"G1A1A1A0A0ASX")
128 80
hex
SerialNumber
1)
Serial number of the device (for
example “J1140501")
129 81
hex
CalibrationDate
1)
Main calibration date in YYYY-MM-DD
format. Empty string if not set/valid.
130 82
hex
CalibrationText
1)
Main calibration information text.
Empty string if not set/valid.
1) Vaisala-specific device identification object.
DMT143 User Guide M211435EN-J
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