Siemens Simantic ET 200S - Pulse Stretching

Digital electronic modules
3.2 Parameters of the Digital Electronic Modules
ET 200S
Manual, Edition 10/2005, A5E00514527-01
3-5
3.2.4 Pulse stretching
Definition
The pulse stretching is a function used to modify a digital input signal. A pulse at a digital
input is stretched to at least the length set in the parameters. If the input pulse is already
longer than the selected length, it is not changed
Principle of Pulse Stretching
The figure below shows a few examples of input pulse modification.
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Figure 3-1 Principle of Pulse Stretching