Siemens SIMATIC S7-1200 Function Manual page 307

PID algorithm
PID_3Step is a PIDT1 controller with anti-windup and weighting of the proportional and
derivative actions. The PID algorithm operates according to the following equation:
Symbol
Δy
K
p
s
b
w
x
T
I
T
D
a
c
PID control
Function Manual, 03/2017, A5E35300227-AC
Description
Output value of the PID algorithm
Proportional gain
Laplace operator
Proportional action weighting
Setpoint
Process value
Integral action time
Derivative action time
Derivative delay coefficient (derivative delay T1 = a × T
Derivative action weighting
Instructions
9.2 PID_3Step
)
D
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