MAN0964-13-EN_XL4_UM
A u g u s t 6 , 2 0 2 1 P a g e 101 | 194
At controller power-up or during a download, the PWM output is maintained at zero until both
the Frequency and the Duty cycle are loaded with non-zero values. When the controller is
placed in Stop Mode, the state of the PWM outputs is dependent on the PWM State on
Controller Stop configuration. This configuration allows for either hold-last-state or specific
frequency and duty cycle counts. Specifying zero for either the period or duty causes the
PWM output to remain low during stop mode.
NOTE: For standard I/O models (1E3, 1E4, 1E5, and 1E6) the maximum recommended PWM
frequency is 10kHz, due to the limitations of built-in output circuitry. The HE-XHSQ generates
24V pulse outputs with a recommended max of 400kHz. The HE-XHSQ-5 generates 5V pulse
outputs with a recommended max of 1.0MHz. The add-on HSQ and HSQ-5 module can be
added to the 1E2 unit for HSC function. (PWM)
9.5.3 PWM Output Waveform
Figure 9.6 – PWM Output Waveform
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