Execution Condition Switching And Functions; Execution Condition Switching; Loop Run/Stop - Mitsubishi Electric MELSEC-Q QnPHCPU Programming Manual

5 EXECUTION CONDITION SWITCHING AND FUNCTIONS

5 EXECUTION CONDITION SWITCHING AND
FUNCTIONS

5.1 Execution Condition Switching

5.1.1 Loop RUN/STOP

If any loop component such as a detector or operation end other than the PLC fails, each loop can
be run/stopped to perform the maintenance of the corresponding loop.
The "SPA" bit of the alarm detection (ALM) is used to run/stop the corresponding loop.
(1) Basic operation during loop STOP
(a) Output status hold (The S.2PID instruction is output = 0)
(b) Alarm No detection (Process alarm)
(c) Make the control mode MAN.
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MELSEC-Q
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