Vortechs Automation began installing building automation systems starting in 1990. Back then, the systems were complicated, expensive and much smaller than they are now. A typical system may have had a meager 32 analog inputs and a total points count of under 100. Outfitting a large facility often involved installing many individual systems. Sometimes they would be linked to one another but not always. Even when they were linked, communications could be extremely slow.
This inspired Walter Horrigan, co-founder of Vortechs Automation, to invent the Maestro System for integrating 100-point systems. When paired with an off-the-shelf PC running Iconics Genesis RTS virtual PLC software, it became a powerful control system capable of supporting up to 256 analog inputs.