User`s manual

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MELSEC-Q
13 AUTO TUNING
Processing contents
(1) Start signal judgement processing
Any of the following processings is performed depending on the statuses of the auto tuning
start signal (e1) and auto tuning completed (BB16).
e1 BB16 Processing
00
BB2 to BB8 of BB are turned to 0.
When the stepped manipulated value preset flag is 1, the following
processing is performed.
MV
MV AT1STEPMV
The S. AT1 instruction is terminated.
1 0 "(2) Loop stop processing" is performed.
01
BB16 of BB is turned to 0.
The S. AT1 instruction is terminated.
1 1 The S. AT1 instruction is terminated.
(2) 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. AT1 instruction.
1) The auto tuning completed (BB16) is turned to 1.
2) When the stepped manipulated value preset flag is 1, the following processing is
performed.
MV MV AT1STEPMV
(b) Setting 0 in SPA of the alarm detection (ALM) selects a loop run.
A loop run performs "(3) Mode judgement processing".
(3) Mode judgement processing
Either of the following processings is performed depending on the operation mode (MODE)
setting.
(a) When the operation mode (MODE) is any of AUT, CAB, CAS, CCB, CSV, LCA and LCC,
the following processing is performed and the S. AT1 instruction is terminated.
1) The operation mode alarm (BB7) is turned to 1.
2) The auto tuning completed (BB16) is turned to 1.
3) When the stepped manipulated value preset flag is 1, the following processing is
performed.
MV MV AT1STEPMV
(b) When the operation mode (MODE) is any of MAN, CMB, CMV and LCM, "(4) Input check
processing" is performed.