Ny-Series Instructions Reference Manual (W560 - Omron NY532-5400 Reference Manual

Variables
MVUpLmt
ManResetVal
MVTrackSw
MVTrackVal
StopMV
ErrorMV
Alpha
ATCalcGain
ATHystrs
SampTime
RngLowLmt
RngUpLmt
DirOpr
ProportionalBand
IntegrationTime
DerivativeTime
ManMV
*1 ManCtl is TRUE, Run is FALSE, Error is TRUE, or MVTrackSw is TRUE.
*2 ManCtl is FALSE, Run is TRUE, Error is FALSE, MVTrackSw is FALSE, and ATBusy is FALSE.
*3 ManCtl is FALSE, Run is TRUE, Error is FALSE, MVTrackSw is FALSE, and ATBusy is TRUE.
• SampTime is truncated below 100 nanoseconds.
• If the value of StartAT changes to TRUE while the value of ManCtl is TRUE, autotuning starts the
next time the value of ManCtl changes to FALSE.
• If the value of ErrorMV is not within the valid range (−320 to 320), the value of MV will be 0 when an
error occurs.
• Autotuning is canceled if the value of ManCtl changes to TRUE during autotuning.
• The value of Error does not change to TRUE even if an error occurs during autotuning.
• An error occurs in the following case. Error will change to TRUE, and an error code is assigned to
ErrorID. ATDone and ATBusy change to FALSE. MV is set to the value of ErrorMV if the values of
ManCtl and Run are FALSE. If the value of ErrorMV is outside of the valid range, the value of MV is 0.
The value of an input variable is outside of the valid range.
RngLowLmt is greater than or equal to RngUpLmt.
MVLowLmt is greater than or equal to MVUpLmt.
• If an error stop is required for conditions other than the above, program the system so that the value
of Run changes to FALSE when the error occurs.
• If an error occurs because the value of PV or SP exceeds the valid range, the error status is main-
tained for five seconds even if the value returns to within the valid range sooner. That is, the value of
Error will remain FALSE for five seconds.
• PID control is restarted automatically if the value of Run is TRUE after the error is reset. Autotuning is
restarted automatically if the values of Run and StartAT are TRUE.
• A check is made for errors each sampling period.

NY-series Instructions Reference Manual (W560)

Instruction execution
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stopped
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Error
2 Instruction Descriptions
Control status
Automatic operation
when autotuning is not
*2
being executed
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Value of ErrorID
16#0400
16#0401
Automatic operation
when autotuning is being
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2-683
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