Product Description
1.Product description
8ch optoelectronic isolation digital input and 4ch relay output (SPST).
Using RS485 MODBUS RTU communication standard. It can be netted with configuration software, PLC and industry touch pad
Communication, input and output status LED
Communication circuit designed for lightening protection and interference immunity
Could be used for signal collection and control of Industrial field apparatus
3 Year's quality assurance for normal use
2Communication Instruction
3.1 Communication parameter (default setting):9600,N,8,1



Parameter |
Description |
9600 |
baud rate |
N(no check) |
check bit |
8 |
data bit |
1 |
stop bit |
5.2 Command for digital input collection:
Send: 01 02 00 00 00 08 79 CC (example/hexadecimal)
data |
byte |
data description |
remark |
01 |
1 |
module address |
Address range 01-FE |
02 |
1 |
function code |
02-read input bit |
0000 |
2 |
input address
(1x mode) |
0000-initial address of input bit |
0008 |
2 |
read length of input bit |
0008-read 8 input bits |
79CC |
2 |
CRC check code |
CRC check code for all data |
Receive: 01 02 01 C2 20 19 (example/hexadecimal)
data |
byte |
data description |
remark |
01 |
1 |
module address |
Address range 01-FE |
02 |
1 |
function code |
02-read input bit |
01 |
1 |
byte numbers |
01-read one byte length |
C2 |
1 |
read data |
C2-read input bit status |
2019 |
2 |
CRC check code |
CRC check code for all data |

