Справочник Пользователя для Mitsubishi Electronics FX
FX Series Programmable Controllers
Points Of Technique 10
10-20
10.14.3 Timing diagrams for communications:
1) No Handshaking D8120 (b12, b11, b10) = (0, 0, 0)
FX
2N
below version 2.0
*When using FX
0N
, FX, FX
2C
this should be 2 x scan time or more
2) Terminal mode D8120 (b12, b11, b10) = (0, 0, 1)
a) Send Only
b) receive only
FX
0(S)
FX
0N
FX FX
(2C)
FX
2N(C)
Reset using a program.
When it is not turned off, the
next data cannot be received.
When it is not turned off, the
next data cannot be received.
Data 1
RS
instruction
instruction
Send wait
flag M8121
flag M8121
Send data
SD (TXD)
SD (TXD)
OFF ON
Data 4
Data 2
Data 3
OF
F
ON
Send request
M8122
M8122
Receive data
RD (RXD)
RD (RXD)
Receive
completion
M8123
completion
M8123
OFF
ON
ON
ON
OFF
* This period should
be 100
be 100
µ
s or more
The receive wait
status is started
status is started
Data 1
RS
instruction
Send data
SD (TXD)
instruction
Send data
SD (TXD)
OFF ON
Data 2
Send request
M8122
M8122
ON
OFF
Data 1
ER(DTR)
OFF
OFF
ON
ON
DR(DSR)
Reset using a program.
When it is not turned off, the next data cannot be received.
When it is not turned off, the next data cannot be received.
Data 1
OFF
ON
OFF
ON
ON
Data 2
OFF
ON
RS
instruction
instruction
Receive data
RD (RXD)
RD (RXD)
ER(DTR)
ON
Receive
completion
M8123
completion
M8123