Pidat - Omron NJ501-1500 Reference Manual

PIDAT

The PIDAT instruction performs PID control with autotuning (2-PID control with set point filter).
Instruction
PIDAT PID Control with
Autotuning
Variables
Name Meaning
Run Execution con-
dition
ManCtl Manual/auto
control
StartAT Autotuning exe-
cution condition
PV Process value
SP Set point
OprSet Operation set-
Params ting parameters
InitSet Initial setting
Params parameters
Propor- Proportional
tional Band band
Integration- Integration time
Time
Deriva- Derivative time
tiveTime
ManMV Manual manip-
ulated variable
NJ-series Instructions Reference Manual (W502)
Name FB/FUN
FB
I/O Description
TRUE: Execute
FALSE: Stop
TRUE: Manual operation
FALSE: Automatic operation
TRUE: Execute
FALSE: Cancel
Input
Process value
Set point
Parameters set during opera-
tion
Initial setting parameters
Proportional band
Integration time
The higher the value is, the
weaker the integral action is.
No integral action is performed
for 0.
In-out
Derivative time
The higher the value is, the
stronger the derivative action is.
No derivative action is per-
formed for 0.
Manual manipulated variable
2 Instruction Descriptions
Graphic expression
PIDAT_instance
PIDAT
Run ATDone
ManCtl ATBusy
StartAT Error
PV ErrorID
SP MV
OprSetParams
InitSetParams
ProportionalBand
IntegrationTime
DerivativeTime
ManMV
Valid range
Depends on data type.
*1
---
0.01 to 1000.00
T#0.0000s to
T#10000.0000s
T#0.0000s to
T#10000.0000s
−320 to 320
ST expression
PIDAT_instance(
Run,
ManCtl,
StartAT,
PV,
SP,
OprSetParams,
InitSetParams,
ProportionalBand,
IntegrationTime,
DerivativeTime,
ManMV,
ATDone,
ATBusy,
Error,
ErrorID,
MV);
Unit Default
FALSE
---
0
---
% FS
*2
s
---
*2
%
2-393
2