S7 Siemens PLC Trace Signals

S7 Trends is a free and easy-to-use software to trace what is going on in Siemens PLC. You can watch & record in real time the state of all types of variables:
– Markers
– Inputs/Outputs
– Timers
– Counters
– Databases
It is written in C# and it is using Snap7 library. It should work also with S1200.
Current state is stable.

If you encounter any problems or you have any idea for a new feature – write a review https://sourceforge.net/projects/s7-trends/reviews/new
Testing and criticism is very welcome, as well as donations.
Version 1.02 Released:
– Much performance improvement & Bugfixes
– Chart zooming with rectangle
– Import symbols in DIF format
– Change Display format for variables
– Save & Load variables configuration
– Handling of Timers & Counters

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