The PC I have used.by Sistema Automation Industrial ;The company had made the migration of the device used to program PLC s Reliance Electric into micro computers.

On this picture I was programming a PLC AUTOMATE 40E of 8000 I/0  in 1987 in Sao Paulo , for the regenerators of the high furnace of CSN ;

This system had only 800 i/os but the loading had 4000 . Everything has been tested in SP and installed in Volta Redonda. Brazil in 1988.

 

 

Working in GERMANY in 2008