> My 2 cents. For some things non-realtime i/o is fine. I have seen too > many times where someone is maybe controlling a spindle and wonders why a > change in direction takes so long and or isn't consistent. Once they > switch over to something realtime (+/-10v or pwm) the issue goes away.
Heard story about delays of brakes on trains then toilet started to get full there was a switch toggling but not sure if it was true, probably need a passive system there signal must arrive within some specified time or brakes are applied. Are however not sure the westinghouse system is better there pressure is loaded then breaks are not used. First time I heard about the accident there an oil train have crashed then driver was sleeping and left engine on locomotive running I thought driver was drunk. Later however I learned fire department put out fire and did not know it should be running to keep pressure up, this system is still allowed? Or I got it wrong? _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
