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Settings on the C24 module in the MELSEC PLC
system
AJ71C24
Station number:
When communicating with the E-series: 0
Mode setting:
When communicating with the E-series: A
Setting of the switches:
Default
comm.
Switch
settings in
Setting items
software to
E-series
SW11
ON
Main channel
settings
SW12
ON
Data length
SW13
OFF
Transmission
speed setting
SW14
ON
SW15
ON
SW16
OFF
Parity check
SW17
OFF
Parity setting
SW18
OFF
Stop bit
SW21
ON
Sum check
SW22
ON
Write during
RUN
Position of Setting
Switch
Notes
ON
OFF
RS-422
RS-232C
Valid for
modes A to D
8 bits
7 bits
–
Refer to the table below
–
Enabled
Disabled
–
Even
Odd
Valid only
when SW16
is ON
2 bits
1 bit
–
Enabled
Disabled
For dedi-
cated protocol
Enabled
Disabled
A-1
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