The S7-Tools site is created by a group of experienced Step7 users.

We want to make this site a collection of S7 related articles and handy links. We publish our own articles, publish articles of other users and supply you with links to other Simatic related sites that might be interesting for you.

With our news flashes we keep you up to date with the latest Simatic S7 related information so you don't have to browse all articles yourself to find the S7 related news.

"STAR - LIB"  open source library for Step7 projects:

This project is started & maintained by Mayasin, an experienced and creative S7 programmer.

Check out this smart replacement for the standard timer functions
It contains replacements for all standard timer functions T_ODT, T_OFFDT etc.

Using this library brings important advances:

  • no more restrictions with Timer-numbers (S5 Timers)
  • no longer consume large data areas with S7-timers like FB4 (only 1 DINT is required for internal use)
  • SCL-source is included

Click here to visit the "STAR - LIB" Timers-library page.

News, experiences, suggestions, questions and comments are welcome

Use the 'contact us' page or send us an email if . . . .

  • you want to share an experience/finding with other Simatic users...
  • you want to add a web-link to our site
  • you have a question about S7 code / S7 instruction or certain S7 behaviour.
  • you found a bug.....
  • you want to publish an S7 article on this site
  • you have some tips for other users
  • you want to share your S7 function blocks
  • you want to share a funny automation related story or picture

You can email us at:                Image


Products news


S7 Know how manager

Stop hassling with the Know how protection on your library . . .
Manage your KNOW_HOW_PROTECT blocks with the ease of a click . . . .

See our product section for more details.