Mitsubishi MELSEC-Q series Programming Manual page 181

(4) MV output
The manipulated value (MV(BW)) is calculated under the following condition.
Condition
CMV, MAN, CMB, LCM
CSV, CCB, CAB, CAS, AUT, LCC, LCA
(5) 2-position ON/OFF control
BB1 of BB is output under the following condition.
Condition
|BW|  50%
|BW| < 50%
(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.
Operation Error
In the following cases, the error flag (SM0) turns ON and the error code is stored in SD0.
Error code
When an operation error occurs
When the values of
normalized number
4100
When CT < 0 or the execution cycle (SD1500) < 0
When HS0 < -HS0
When the values of
4140
normalized number
4141 When an operation error occurs
BW
BW = MVn
BW = MV'
MVn = BW
BB1
Error definition
, are either a non-numeric or non-
S1 D2
, are either a non-numeric or non-
S1 D2
1
0
QnPHCPU QnPRHCPU
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––
S.ONF2
QnUDPVCPU
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––
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