
35
6
Hengwei 1
7
Check Digit
2.4 command d to read the control status of the specified instrument.
Command (example address is a):
Command
segment
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 external
input No.2 has a signal.
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.