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Distributed I/O System ET 200S

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Principle of Pulse Stretching<br />

The figure below shows a few examples of input pulse modification.<br />

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Figure 3-1 Principle of Pulse Stretching<br />

Digital electronic modules<br />

3.2 Parameters of the Digital Electronic Modules<br />

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Note<br />

If you set pulse stretching for an input channel, this also affects the flutter monitoring<br />

enabled for this channel. The "pulse stretched" signal is the input signal for flutter monitoring.<br />

You should therefore adapt the pulse stretching parameters and flutter monitoring functions<br />

to each other. Select appropriate parameter values in order to tune the functions to your<br />

process.<br />

<strong>ET</strong> <strong>200S</strong><br />

Manual, 12/2005, A5E00514527-03 3-5

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