russrmartin
Member
Hello again. I have a question about PID controls. When looking on at a PID control block in a PLC 5, I can see where the input range is scaled from engineering units to the 0-4095 value that the PID block uses. However, I cannot see where the output value is scaled at? Is 4095 a constant in AB PID control variable words, or is there somewhere that one can designate 0-4095, or 32767 to -32767, etc. I'm just trying to get a little better grasp on this. Also, is there anywhere a guy can get a cheat sheet for the abbreviated bits in a PID data table. I don't know know what a DVNA, or a OLH bit stands for. I cannot seem to find a description of what each one is and what it's full name is. Any explanation on this subject is welcome. Thanks.
Russ
Russ