11. Operation
11.7.2 Ladder program RUN/STOP signal
The RUN/STOP signal is a signal that controls the RUN and STOP status of a ladder program externally.
When the RUN/STOP switch of the CPU module is set to RUN and the LADDER RUN/STOP switch is set
to RUN, you can control the operation or stoppage of a ladder program by using the ON/OFF contact of the
RUN/STOP input terminal on the RI/O-IF module.
Figures 11-14 and 11-15 show the operation timing for ladder programs.
■ Changing the contact of the RUN/STOP terminal from OFF to ON
RUN/STOP terminal
Ladder program
Figure 11-14 Timing of the STOP/RUN input signal (from OFF to ON)
■ Changing the contact of the RUN/STOP terminal from ON to OFF
RUN/STOP terminal
Ladder program
Figure 11-15 Timing of the STOP/RUN input signal (from ON to OFF)
ON
OFF
Operation
Within 15 ms + one
sequence cycle
ON
OFF
Within 15 ms + one
sequence cycle
11-18
Stop
Operation
Stop