Configure Manipulated Value Cont_S; Commissioning Cont_S - Siemens SIMATIC S7-1200 Function Manual

7.2.4

Configure manipulated value CONT_S

General
You can set CONT_S in the manual or automatic mode.
1. To set a manual manipulated value, activate the "Activate manual mode" option check
box.
Enter a manual manipulated value for the input parameters LMNUP and LMNDN.
Pulse generator
1. Enter the minimum impulse duration and minimum pause duration.
The values must be greater than or equal to the cycle time for the input parameter
CYCLE. The frequency of operation is reduced through this.
2. Enter the motor setting time.
The value must be greater than or equal to the cycle time of the input parameter CYCLE.
See also
Mode of operation CONT_S (Page 456)
7.2.5

Commissioning CONT_S

Requirements
● The instruction and the technology object have been loaded to the CPU.
Procedure
To manually determine the optimal PID parameters, proceed as follows:
1. Click the "Start" icon.
If there is no online connection, this will be established. The current values for the
setpoint, process value and output value are recorded.
2. In the fields "P" and "I", enter a new proportional value and a new integration time.
3. Click on the icon
4. Select the "Change setpoint" check box in the "Current values" group.
5. Enter a new setpoint and click in the "Current Values" group on the icon
6. Clear the "Manual mode" check box.
The controller works with the new parameters and controls the new setpoint.
7. Check the quality of the PID parameter to check the curve points.
8. Repeat steps 2 to 6 until you are satisfied with the controller results.
PID control
Function Manual, 03/2017, A5E35300227-AC
"Send parameter to CPU" in the "Tuning" group.
Using PID basic functions
7.2 CONT_S
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