Vaisala CARBOCAP GMW80 Series, Руководство пользователя

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A.3.2 Status registers
Table 16 Modbus status registers (read-only)
Register
number Address Register description Data
format Notes
513 0200
hex
Device status 16-bit
integer 0000
hex
: Status OK; if other values
are returned, see Table 6 (page 41) in
Solving typical problems (page 39) .
514 0201
hex
Error code 32-bit
integer Used by Vaisala Technical Support
when solving device problems
519 0206
hex
Temperature
measurement status
1)
16-bit
integer 0000
hex
: Status OK
0004
hex
: Under range
0008
hex
: Over range
0080
hex
: Sensor failure
0100
hex
: Measurement not ready
2)
520 0207
hex
CO
2
measurement
status
1) Device internal temperature measurement. Measurement accuracy not specified.
2) Applicable to CO
2
measurement only.
A.3.3 Test value registers
Read the known test values from the test registers to verify the functionality of your Modbus
implementation.
Table 17 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
7940 1F03
hex
Text string test text Text string: "-123.45"
Appendix A – Modbus reference
51