DINGSONG DS822-A8KTF, Operation Instruction Manual, Page: 38 / 49

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2.4 command d to read the control status of the specified instrument.
Host command (example address is a)
Command
section
XON ADD CMD CHK XOFF
Hex
format 02 41 03
ASCII
format A D
Slave answer:
content XON ADD CMD
DATA
CHK XOFF
ijkl
Hex
format
02 41 03
ASCII
format
A d
DATA answered by slave means:
IJKL – Status of external input port and output relay of instrument
The meaning of each binary bit of I The meaning of each binary bit of j
BIT number
(bit)
Work parameters BIT number
(bit)
Work parameters
0 =1 indicates that the No.1
external input has a
signal. 0 =1 indicates that the No.7
external input has a
signal.
1 =1 indicates that there is
a signal from external
input No.2. 1 =1 indicates that the No.8
external input has a
signal.
2 =1 indicates that external
input No.3 has a signal. 2 =1 indicates that relay
No.1 works.
3 =1 indicates that the No.4
external input has a
signal. 3 =1 indicates that relay
No.2 works.
4 =1 indicates that there is
a signal at external input
No.5. 4 =1 indicates that relay
No.3 works.