839
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
36 Operation of Special Devices (M8000 -, D8000 -)
36.2 Supplement of Special Devices (M8000 - and D8000 -)
31
FN
C
275-FN
C
279
Da
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r 3
32
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280
-F
N
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9
H
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33
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290-FN
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299
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SF
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T
L
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Funct
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36
Sp
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E
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Appl
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36.2.14 Individual operation for RUN/STOP input [M8035 to M8037]
When using external push button switches to control the PLC's RUN/STOP mode, operate the switches using
the following procedure.
The PLC enters RUN mode by one-shot input of the RUN switch, while one-shot input of the STOP switch
drives the STOP mode.
1. Program example
The figure on the left shows an example
of FX
3U
PLC (sink input).
2. Setting method
1) Turn the built-in RUN/STOP switch to STOP.
2) Specify the RUN input switch, input (X) (X000 is specified in the above circuit diagram example.)
Make the external RUN/STOP input valid by specifying an input between X000 and X017
*1
for the RUN
input signal.
*1. X000 to X007 in the FX
3U
-16M
a) Display the parameter setting in the programming tool
In GX Developer case, double-click [Parameter] - [PC parameter] in the project tree to display the
dialog box.
Click "PLC system (1)" tab, and set "RUN terminal input."
b) Specify the input (X) number to switch from STOP mode to RUN mode.
3) Specify the STOP switch input (X)
Specify an arbitrary input terminal (actual I/O on the PLC) on a sequence program.
Refer to the above program.
4) Transfer the program and parameters to the PLC.
5) For the parameter settings to become valid, the PLC power must be turned from OFF to ON.
3. Cautions
1) When both RUN and STOP switches are pressed at the same time, priority is given to the STOP switch.
2) When the built-in RUN/STOP switch is turned to RUN, the PLC can be set to RUN mode.
However, with the activation of the STOP switch assigned to an arbitrary input, the PLC will enter STOP
mode. (Even if the built-in switch is turned to RUN, priority is given to the STOP command.)
X000
PLC
STOP
S/S
X001
M8000
Forced RUN mode
M8035
Forced RUN signal
M8036
Forced STOP signal
M8037
X001
Input the above program in the PLC.
RUN
0V
24V