User`s manual

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MELSEC-Q
9 CONTROL OPERATION INSTRUCTIONS
(4) MV output
The manipulated value (MV(BW)) is calculated under the following condition.
Condition BW
CMV, MAN, CMB, LCM BW
MVn
CSV, CCB, CAB, CAS, AUT, LCC, LCA
BW MV’
MVn
BW
(5) 2-position ON/OFF control
BB1 of BB is output under the following condition.
Condition BB1
|BW| 50% 1
|BW| 50% 0
(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.ONF2 instruction.
1) BW and BB1 retain the last values.
2) The operation mode (MODE) is changed to MAN.
(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
1) When the operation mode (MODE) is any of CSV, CCB, CAB, CAS, AUT, LCC and
LCA, BW is retained and the S.ONF2 instruction is terminated.
2) When the operation mode (MODE) is any of MAN, CMB, CMV and LCM, BW is made
equal to MV and the processing of "(5) 2-position ON/OFF control" is performed.
(b) If the specified control cycle is reached, "(1) SV setting processing" is performed.
Error
• When an operation error occurs Error code: 4100