Appendix A Serial port 485 communication protocol
45
A.2.3 Transport mode
Asynchronous serial
,
semiduplex transport mode. Default format and transport
rate: 8-N-1, 9600bps.For specific parameter setting please see description for
F2.14
~
F2.17 group function code.
(Remark: Below definition is only effective under series port RS485
communication mode, and definition for other parameters are the same as original)
F2.14 Communication
configuration
LED first bit: baud rate selection
0: 1200BPS
1: 2400BPS
3: 9600BPS
4: 19200BPS
5: 38400BPS
LED second bit: data format
0: 1-8-1 Format
,
no checkout
1:1-8-1 Format
,
even checkout
2:1-8-1 Format, odd checkout
1 03 ×
F2.15 Local address
0-127,127 is a broadcast address
1
1
×
F2.16 Communication
timeout detection time
0.0
~
1000.0s
0.1s 0.0s
×
F2.17 Local response delay
0
~
200ms 1ms
5ms
×
A.2.4 Data command frame format
Main device command frame format
Sending
order
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18
Frame head
Auxiliary d
evice addr
es
s
Auxiliary d
evice addr
es
s
Main device
comma
nd
Main device
comma
nd
Assistant i
ndex
Assistant i
ndex
Command index
Command index
Set data
Set data
Set data
Set data
Checkout s
um
Checkout s
um
Checkout s
um
Checkout s
um
Frame end
Definition head address
Command
area
Index area
Setting data area Checkout area End
Sending
byte
1 2
2
4
4
4 1
Auxiliary device response frame format
Sending
order
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18
ENC