About us...

We are a company of consulting engineers with headquarters in Bretten, Germany.

Since 1992, our focus is on Simatic STEP5, and since 1997 on Simatic STEP7 programming.

Our emphasis is on the development of standard Simatic STEP7 software solutions.

We have acquired a unique level of expertise and specialized know-how by developing simulation, programming, diagnostic, communication and visualization software.

We have published some of this knowledge in various books on the PLC programming languages STEP5 and STEP7 (STEP5 crash course, STEP7 crash course, Step7-Workbook, Grafcet-Workbook).

You will find software products, that are available in English, on this website.


Please don't hesitate to visit our German website www.mhj.de


We have a representative office in China. Kontaktperson: Your contact person: Mr. Karoly Szalai. Webseite: https://www.sinneo-tech.com


Responsible for this website is ...


Matthias Habermann

MHJ-Software GmbH & Co. KG

Albert-Einstein-Str. 101

D-75015 Bretten


Email: info@mhj.de


Legal information in German






The information contained in this website is for general information purposes only. The information is provided by MHJ-Software and while we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of data or profits arising out of, or in connection with, the use of this website.Through this website you are able to link to other websites which are not under the control of MHJ-Software. We have no control over the nature, content and availability of those sites. The inclusion of any links does not necessarily imply a recommendation or endorse the views expressed within them.Every effort is made to keep the website up and running smoothly. However, MHJ-Software takes no responsibility for, and will not be liable for, the website being temporarily unavailable due to technical issues beyond our control.

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