INST No. INE-479-P0
Software version 1.0
-16-
5.4 Function code of a digital setting value
5.4.1 Reading of a digital setting value
[Function code: 01 (01H)]
Continuously digital setting value (ON/OFF) is read out only the designated number from the
designated No.
ON/OFF data is configured of the data of the answer message that was arranged to 1 data (1 byte)
in the order of 8 each numbers.
LSB (D0 side) of each data becomes the youngest number of the digital data.
In the case that the reading number is not 8 multiples, an unnecessary bit becomes 0.
[Example]:
Program the digital setting value reference number 1 of slave 1 to
“ON”.
<RTU mode>
Master
→
Device Device
→
Master
Upper class as personal
IRMA series
Slave address
01H
Slave address
01H
Function code
01H
Function code
01H
Start No (H)
*1
00H
Data number
01H
Start No (L)
*1
00H
First 8 data
01H
The number (H)
00H
CRC (L)
90H
The number (L)
01H
CRC (H)
48H
CRC (L)
FDH
CRC (H)
CAH
First 8 data
0
0
0
0
0
0
0
1
(01H)
↑
↑
Reference No
8
7
6
5
4
3
2
1
Next
8
data
1
↑
Reference No
16 15 14 13 12 11 10 9
*1: Start No (Relative No) is "Reference No-1".
5. MODBUS protocol-Function code
Absorbance displaying mode
Surface water ratio computation
Measured value hold
Preset output
Smoothing/Real
R e m a r k s
