Siemens SIMATIC S7 System Manual page 597

Use one of the following methods to open the PWM wizard:
● Click the "PWM" button from the Wizards area of the Tools menu.
● Open the Wizards folder in the project tree and double-click "PWM", or select "PWM" and
press the Enter key.
1. Select a pulse generator.
2. Change the name of a PWM channel, if required.
3. Configure the PWM channel output time base.
4. Generate project components.
5. Use the PWMx_RUN subroutine to control the duty cycle of your PWM output.
Note
PWM channels are hard-coded to specific outputs:
• PWM0 is assigned to Q0.0.
• PWM1 is assigned to Q0.1.
• PWM2 is assigned to Q0.3.
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
Open loop motion control
12.1 Using the PWM output
597