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FX Series Programmable Controllers Points Of Technique 10
10-21
3) Normal Mode 1 D8120 (b12, b11, b10) = (0, 1, 1)
FX2N below V2.00.
* When usin
g
FX0N, FX, FX2C this period should be 2x scan time or more.
4) Normal Mode 2 D8120 (b12, b11, b10) = (1, 0, 1)
FX2N below V2.00
Reset usin
g
a pro
g
ram.
When it is not turned off, the
next data cannot be received.
Data 1
RS
instruction
Send wait
fla
g
M8121
Send data SD
(TXD)
OFF ON
Data 3
Data 2
OFF ON
Send request
M8122
Receive data
RD (RXD)
Receive
completion
M8123
OFF ON
ON
OFF
ON
ON
OFF
OFF
This period should be 100
µ
s or more
ER(DTR)
DR(DS
R)
Data 1
RS
instruction
Send wait
fla
g
M8121
Send data
SD (TXD)
OFF ON
Data 3
Data 2
OFF ON
Send request
M8122
Receive data
RD (RXD)
Receive
completion
M8123
OFF ON
ON
ONOFF
OFF
ER(DTR)
DR(DSR)
*4
*5
*1
*2
*3
*1
Check
OFF
ON
Check OFF