Siemens SIMATIC S7-1200 Function Manual page 29

Step response of a proportional action controller
①
②
③
Equation for proportional action controller
Output value and control deviation are directly proportional, meaning:
Output value = proportional gain × control deviation
y = GAIN × x
PID control
Function Manual, 03/2017, A5E35300227-AC
Control deviation
Output value of a continuous controller
Output value of a pulse controller
2.6 Control Response at Different Feedback Structures
Principles for control
29