SerialKeys triggering of Protocol Analyzer

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I use a lot of protocol analyzers but most of them lack good event triggers other than time or buffer size. If I'm looking for an event (or non-event) on my automation network that my PLC can detect I want the PLC to stand by all night waiting to push the "pause" button so I don't have to wade through megabytes of buffer data to find the problems.

This example uses a Windows Accessibility function called "SerialKeys" to allow a PLC to "push the button" on your PC running an analysis tool.