Remote Run/Stop (Rr, Rs Commands); Operation Of Remote Run/Stop; Conditions For Valid Execution Of Remote Run/Stop - Mitsubishi Electric MELSEC FX Series User Manual

FX communication
8.7

Remote RUN/STOP (RR, RS commands)

8.7.1

Operation of Remote RUN/STOP

When remote RUN/STOP is requested from the computer, the programmable controller forced
run mode, and the special auxiliary relays M8035, M8036, M8037 are controlled as follows.
• Remote RUN
When remote RUN (RR command) is requested, M8035 and M8036 are set ON at the
programmable controller, and forced RUN mode becomes active; the programmable
controller switching to RUN.
However, when remote run is executed while the programmable controller is running (forced
or otherwise), the state is not changed, and the remote error code (18H) is returned to the
computer.
• Remote STOP
When remote STOP (RS command) is requested, M8037 is set ON at the programmable
controller. This in turn resets M8035, M8036 and M8037 to OFF and forced RUN mode is
disabled; the programmable controller switching to STOP .
However, when remote STOP is executes while the programmable controller is not in forced
RUN mode, the state is not changed, and the remote error code (18H) is returned to the
computer.
8.7.2

Conditions for Valid Execution of Remote RUN/STOP

The RUN terminal of the programmable controller is OFF, any built-in RUN/STOP switch is at
STOP .
• Remote RUN
The programmable controller should be stopped.
• Remote STOP
The programmable controller should be in forced run mode.
Notes
• Forced RUN mode is not restored after a power failure. When the programmable
controller is in forced RUN mode, if the power source is turned off and on, the special
auxiliary relays M8035, M8036, M8037 are all reset to OFF, and the programmable
controller remains in STOP .
Remote stop
Forced run mode
YES
Special auxiliary relay
M8037 is ON
Special auxiliary relays
M8035, M8036, M8037
are OFF
Programmable
controller is stopped.
NO
Remote error code (18H) is returned to
computer, and the state of programmable
controller is not changed.
Commands 8
8-10