
COOLMAY EX3G PLC/HMI All in one Programming manual
45
RS port protocol
M8196=1
M8125=0
M8192=1
-
RS sending mark
M8122=1
M8402=1
M8422=1 Need manual reset
RS sending completion mark
-
-
M8425
Need manual reset
RS receiving completion mark
M8123
M8403
M8423
Need manual reset
RS receiving process mark
M8124
M8404
M8424
Data is receiving
RS command 8/16 bits
differentiation mark
M8161
M8161
M8161
RS command CAN
master-slave mark
-
-
M8426
M8426=0 master-slave mode,
M8426=1 multi-device mode
RS command end operation
settings
0
1
2
MODBUS RTU function
M8196=1
M8125=1
M8192=1
-
RD3A\WR3A receiving
completion mark
M8128
M8408
M8428
Need manual reset
RD3A\WR3A communication
over-time mark
M8129
M8409
M8429
Need manual reset
ADPRW command completion
mark
M8029
M8029
M8029
Command execution end mark
Communication parameters
D8120
D8400
D8420
Communication mode
-
D8401
D8421
Master-slave station number
D8121
D8414
D8434
D8440
D8442
D8434:CAN slave station NO
D8440\D8442 multi-device mode
ID NO
RD3A/WR3A overtime
D8129
D8409
D8429
Unit: ms
RD3A/WR3A interval period
D8126
D8406
D8426
26232 or higher version
RD3A\WR3A end operation -1
0
1
2
ADPRW command settings
D8126=0
D8126=1
D8126=2
26232 or lower version
ADPRW command settings
D8397=0
D8397=1
D8397=2
26232 or higher version
CAN data frame
-
-
M8427
Special relay involved in this serial port 3: M8192,M8402,M8403,M8408,M8029,M8161.
Special register involved in this serial port 3: D8400,D8401,D8414,D8126,
D8397(26232 version
higher).
M8192
:
the activation flag of using programming port protocol and other protocol (Main version 26232 and
higher, modified to not maintain power failure).
M8402
:
Send flag (use when RS2 instruction)
。
M8403
:
Communication completion flag (communication completion flag when using RS instruction, needs
to be reset by hand).
M8408
:
Communication completion flag (valid when using RD3A and WR3A for MODBUS
communication, needs to be reset by hand).