User`s manual

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MELSEC-Q
9 CONTROL OPERATION INSTRUCTIONS
(6) Loop stop processing
(a) Setting 1 in SPA of the alarm detection (ALM) selects a loop stop.
A loop stop performs the following processing and terminates the S.2PID instruction.
1) BW is turned to 0.
2) DVLA of the alarm detection (ALM) is turned to 0.
3) The operation mode (MODE) is changed to MAN.
4) BB1 of BB are turned to 0.
(b) Setting 0 in SPA of the alarm detection (ALM) selects a loop run.
A loop run performs "(7) Control cycle judgment".
(7) Control cycle judgment
(a) If the specified control cycle is not reached, BW ( MV) is turned to 0 and the S.2PID
instruction is terminated.
(b) When the specified control cycle is reached, "(1) SV setting processing" is performed.
ERROR
• When an operation error occurs Error code: 4100