Hi All
In RsLogix 5000 PID instruction Help menu, it says that .CA member of the PID structure is responsible for Control Action:
IF .CA = 0 then E = SP - PV
IF .CA = 1 then E = PV - SP
Now from RSlogix 500, it says specifically that E = SP - PV is Reverse Acting Mode where as E = PV - SP mode is a Direct acting mode.
My question is, Is it true for RSLOGIX 5000 PID Instruction as well. Means can we say the following:
If .CA = 0 then mode is REVERSE (E = SP - PV)
If .CA = 1 then mode is DIRECT (E = PV - SP)
Because in RSLOGIX 5000 help menu for PID it doesn't say that E = PV - SP is DIRECT ACting and E = SP - PV is a REVERSE ACting
Thnaks in advance
In RsLogix 5000 PID instruction Help menu, it says that .CA member of the PID structure is responsible for Control Action:
IF .CA = 0 then E = SP - PV
IF .CA = 1 then E = PV - SP
Now from RSlogix 500, it says specifically that E = SP - PV is Reverse Acting Mode where as E = PV - SP mode is a Direct acting mode.
My question is, Is it true for RSLOGIX 5000 PID Instruction as well. Means can we say the following:
If .CA = 0 then mode is REVERSE (E = SP - PV)
If .CA = 1 then mode is DIRECT (E = PV - SP)
Because in RSLOGIX 5000 help menu for PID it doesn't say that E = PV - SP is DIRECT ACting and E = SP - PV is a REVERSE ACting
Thnaks in advance