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Data Control Instructions Section 3-18
3-18 Data Control Instructions
3-18-1 PID CONTROL: PID(190)
Purpose Executes PID control according to the specified parameters.
Ladder Symbol
Variations
Applicable Program Areas
Parameters The following diagrams show the locations of the parameter data. For details
on the parameters, refer to PID Parameter Settings in this section.
PID(190)
S
C
D
S: Input word
C: First parameter word
D: Output word
Variations Executed Each Cycle for ON Condition PID(190)
Executed Once for Upward Differentiation Not supported.
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification Not supported.
Block program areas Step program areas Subroutines Interrupt tasks
Not allowed OK OK Not allowed
15 8 07
C+5
0
32 14
PID starting integral manipulated variable
designation
Set value (SV)
Proportional band (P)
Integral constant (Tik)
Derivative constant (Tdk)
Sampling period (Ï„)
Forward/reverse designation
PID constant update timing designation
Manipulated variable output setting
2-PID parameter (α)
Output range
Integral and derivative unit
Input range
Manipulated variable output limit control