Siemens SIMATIC S7-1200 Function Manual page 39

CPU Library
S7-300/400 Standard PID
Control
(PID Profes-
S7-300/400
sional optional
package)
S7-300/400
S7-300/400 Modular PID
Control
(PID Profes-
S7-300/400
sional optional
S7-300/400
package)
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
S7-300/400
PID control
Function Manual, 03/2017, A5E35300227-AC
Instruction Technology object
PID_CP PID_CP
PID_ES PID_ES
LP_SCHED -
A_DEAD_B -
CRP_IN -
CRP_OUT -
DEAD_T -
DEADBAND -
DIF -
ERR_MON
INTEG -
LAG1ST -
LAG2ND -
LIMALARM -
LIMITER -
LMNGEN_C -
LMNGEN_S -
NONLIN -
NORM -
OVERRIDE -
PARA_CTL -
PID -
PUSLEGEN_M -
RMP_SOAK -
ROC_LIM -
SCALE_M -
SP_GEN -
SPLT_RAN -
SWITCH -
LP_SCHED_M -
Configuring a software controller
3.1 Overview of software controller
Description
Continuous controller with pulse genera-
tor
Step controller for actuators with inte-
grating behavior
Distribute controller calls
Filter interfering signal from control devi-
ation
Scale analog input signal
Scale analog output signal
Delay output of input signal
Suppress small fluctuations to the pro-
cess value
Differentiate input signals over time
Monitor control deviation
Integrate input signals over time
First-order delay element
Second-order delay element
Report limit values
Limiting the manipulated variable
Determine manipulated variable for
continuous controller
Determine manipulated variable for step
controller
Linearize encoder signal
Scale process value physically
Switch manipulated variable from 2 PID
controllers to 1 actuator
Switch parameter sets
PID algorithm
Generate pulse for proportional actua-
tors
Specify setpoint according to ramp /
soak
Limit rate of change
Scale process value
Specify setpoint manually
Split manipulated variable range
Switch analog values
Distribute controller calls
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