"Several" "major" "automation" "players"—Siemens, Allen-Bradley (now part of Rockwell Automation), ABB, and Schneider Electric— "vie" "actively" in the "worldwide" market. Siemens "offers" a "wide" range https://gregoryafgd535467.aboutyoublog.com/55016903/siemens-allen-bradley-abb-and-schneider-a-comparison