Siemens SIMATIC S7-1500 System Manual page 192

Configuring
9.9 Configuration of digital inputs/outputs (X142)
Configuring Pulse width modulation PWM
To configure PWM operating mode, first define the required base frequency of pulse width
modulation. You can configure the base frequency as 1, 2, 4, 8 or 16 kHz. The selected base
frequency then applies to all channels of interface X142.
Figure 9-29 Base frequency of pulse width modulation
Now select the channels for PWM operating mode. If you want to configure very short pulses,
enable the high-speed output function.
Figure 9-30 Pulse width modulation channel
The selected digital output is switched with the selected base frequency and the switching
pattern from the control interface.
Inversion
You can invert the 24 V signal to adjust it to your process. By default, the signal is not
inverted.
190
SIMATIC Drive Controller
System Manual, 11/2023, A5E46600094-AD