Articles

Virtualbox vs VMware Player

There are many articles comparing Virtualbox and VMware products, but I could find none that would list the points important for my industrial automation tasks. So here is my list, still growing, of pros and cons of VMware Workstation Player v15.5.6 as compared to Virtualbox 6.1.10. So far VMware Workstation Player better suits my purposes. […]

February 27, 2020
16223 views
  • PXE network boot using netboot.xyz under Docker

    Computer boot up options For low-level computer maintenance (working with partitions and hard disk images, data recovery, fighting viruses and cyber attacks, etc.) and for installing the operating system, you can use bootable USB flash drives, for example: Ubuntu Live, Clonezilla, SergeyStrelec. However, this solution has disadvantages: there are many different tools and distributions, so […]

    February 17, 2020
    15884 views
  • Emailing Recommendations

    The following are guidelines for effective email usage (in decreasing order of importance). The first five items are strongly recommended, the others are nice to have. Answer all business messages containing questions or requests within two business days, preferably on the same day. If you can’t give a final answer, then write that you’ll do […]

    December 17, 2019
    15760 views
  • 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 to specify custom port, I […]

    August 30, 2019
    15204 views
  • How a heatpump task grew into math game in Java

    My customer from Germany gave me a small task – to develop a function for Carel PLC which would determine if heatpump is working in an optimal mode. The mode is optimal when the condensing and evaporation temperatures are within certain zones that are specified as polygons, so the essential part of that task was […]

    August 20, 2019
    15283 views