YOKOGAWA IR202, Руководство пользователя

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<4. DETAILS OF MESSAGE>
4-2
IM 11G02Q02-01EN 2nd Edition : Sep. 04, 2020-00
(3) Message transmission (example)
The following shows an example of reading out from No. 1 station the setting Ch2 (2nd
component) range-1 zero and span calibration concentration.
Relative address of Ch2 range-1 zero calibration concentration setting: 0004
H
Data number: 02
H
Command message Response message
Station No. 01
H
Station No. 01
H
Function code 03
H
Function code 03
H
Read-out start No.
(relative address)
Upper 00
H
Read-out byte number 04
H
Lower 04
H
Contents of the first
word data
Upper 00
H
Read-out word
number
Upper 00
H
Lower 00
H
Lower 02
H
Contents of the
next word data
Upper 03
H
CRC data
Lower 85
H
Lower E8
H
Upper CA
H
CRC data
Lower FA
H
Upper 8D
H
• The following describes how read-out data is compiled.
Ch2 range-1 zero calibration concentration setting 00. 00H = 0
(contents of first word data)
Ch2 range-1 span calibration concentration setting 03 E8H = 1000
(contents of next word data)
Provided decimal point position = 1, measurement unit = 1,
Ch2 range-1 zero calibration concentration setting = 0.0 ppm
Ch2 range-1 span calibration concentration setting = 100.0 ppmI
For handling of decimal point and unit, refer to “5.1.1 Handling of decimal point position
and measurement unit”.
4.2 Read-out word data (Read-out only)
(Function code : 04
H
)
Function
code
Max.word
number read-out
in one message
Relative data
address
Register No. Description
04
H
64 words
0000
H
―00C1
H
30001―30194 Measurement value and status
0425
H
―0469
H
31062―31130 Fixed setting