Testing Modbus TCP

Recently, I needed to check a Modbus TCP server. I went through several client utilities, and I liked one by Schneider most of all: https://www.schneider-electric.com/en/faqs/FA180037/ It also works with Modbus RTU via the COM port. The only drawback is that it only works with default port 502. With the ability …

Regular expressions in Notepad++

There are many useful articles about Regular expressions in Notepad++ in the Internet. I have decided to keep my own as a kind of my personal cheat-sheet. Removing attachments in Thunderbird files Find: (Content-Transfer-Encoding: base64)(.*?)(\r\n–) Replace: \1\3 . matches newlines Convert list of named values into table This regular expression …

Step 7, Windows and Linux

New Siemens PLCs S7-1200 and S7-1500, and TIA Portal software have already become quite mature products and they can be recommended for new projects now, but Step7 will be required for the support of old projects for a long time still. Recent release of the new version Step7 v5.6 (Step …

Switching from Windows to Linux

I had tried to switch to Linux several times during the past three or four years, and every time had to roll back to Windows, because of the critical mass of inconvenience, of being unaccustomed to the new environment, of being unable to quickly solve everyday and working tasks, and …

Ubuntu settings

This article contains mainly the useful stuff I found in the Internet, but there are some things which I developed myself. This is my cheat-sheet, in order not to search the web again. If it turns out to be useful for somebody else, I will only be glad. These settings …

Windows setup

These settings are quite arbitrary, somebody may disagree with them. I think these settings suit my tasks best, but an even better solution may exist, of course. So your feedback is welcome. Many items are written briefly, because they are intended just as a reminder for experienced users. So these …

Compressor sequence

Revision 03-Apr-2014. To run the applet please install Java runtime and add https://a-t-engineering.com in Start > Control Panel > Java — Security — Edit site list. Also, your browser must support Java (Google Chrome does not support). This Java applet illustrates the work of refrigeration compressor sequence algorithm, which has …

Useful links

plcforum.uz.ua Good forum on automation. The topic is about Siemens keys (authorization required). Warning: use EKB_install only for testing, buy the license for site, or else there may be trouble. forums.mrplc.com Good forum on automation. www.plctalk.net/qanda Good forum on automation. support.automation.siemens.com Siemens forum and support (this address is difficult to …