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COOLMAY EX3G PLC/HMI All in one Programming manual
53
The special relays and registers related are as below.
Special relay involved: M8426,M8422,M8424,M8425.
Special register involved: D8420,D8421,D8126,D8397(version in 26232 and above),D8440,D8442.
M8422: Send data and needs manual reset.
M8423: Date receiving completion.
Functions
Serial port
2(A/B)
Serial port
3(A1/B1)
CAN(H/L)
Remark
Programming port
M8196=0
M8192=0
-
26232 or higher version: power
lost can not be retentive
RS2 functions
M8196=1
M8125=0
M8192=1
-
RS2 sending mark
M8122=1
M8402=1
M8422=1 Need manual reset
RS2 sending completion mark
-
-
M8425
Need manual reset
RS2 receiving completion mark
M8123
M8403
M8423
Need manual reset
RS2 receiving process mark
M8124
M8404
M8424
Data is receiving
RS command 8/16 bits
differentiation mark
M8161
M8161
M8161
RS2 command CAN
master-slave mark
-
-
M8426
M8426=0 master-slave mode,
M8426=1 multi-device mode
RS2 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 time-out period
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