Siemens SIMATIC S7 System Manual page 309

Screen
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
Program instructions
Description
Set the following loop parameters:
Gain (Default value = 1.00)
•
Sample Time (Default value =
•
1.00)
Integral Time (Default value =
•
10.00)
Derivative Time (Default value =
•
0.00)
You assign how the loop Process
Variable (PV) is to be scaled. You can
choose from the following options:
Unipolar (default: 0 to 27648; can
•
edit)
Bipolar (default: -27648 to 27648;
•
can edit)
Unipolar 20% offset (range: 5530
•
to 27648; set and unchangeable)
Temperature x 10 °C
•
Temperature x 10 °F
•
In the Scaling parameter, you assign
how the loop setpoint (SP) is to be
scaled. Default is a real number be-
tween 0.0 and 100.0.
7.9 PID
309