Allen-Bradley LOGIX 5000 Reference Manual page 77

Process Control Instructions
DevHAlarm BOOL
DevLAlarm BOOL
DevLLAlarm BOOL
ProgOper BOOL
CasRat BOOL
Auto BOOL
Manual BOOL
Override BOOL
Hand BOOL
DeltaT REAL
AtuneReady BOOL
AtuneOn BOOL
AtuneDone BOOL
AtuneAborted BOOL
AtuneBusy BOOL
Status1 DINT
InstructFault BOOL
(Status1.0)
PVFaulted (Status1.1) BOOL
CVFaulted (Status1.2) BOOL
HandFBFaulted BOOL
(Status1.3)
PVSpanInv BOOL
(Status1.4)
SPProgInv BOOL
(Status1.5)
SPOperInv BOOL
(Status1.6)
SPCascadeInv BOOL
(Status1.7)
SPLimitsInv BOOL
(Status1.8)
RatioProgInv BOOL
(Status1.9)
RatioOperInv BOOL
(Status1.10)
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
Deviation high alarm indicator. Set to true when
PV (SP + DevHLimit). Cleared to false when
PV < (SP + DevHLimit - DevDeadband)
Deviation low alarm indicator. Set to true when
PV (SP - DevLLimit). Cleared to false when
PV > (SP - DevLLimit + DevDeadband)
Deviation low-low alarm indicator. Set to true when
PV (SP - DevLLLimit). Cleared to false when
PV > (SP - DevLLLimit + DevDeadband)
Program/operator control indicator. Set to true when in Program control.
Cleared to false when in Operator control.
Cascade/ratio mode indicator. Set to true when in the Cascade/Ratio mode.
Auto mode indicator. Set to true when in the Auto mode.
Manual mode indicator. Set to true when in the Manual mode.
Override mode indicator. Set to true when in the Override mode.
Hand mode indicator. Set to true when in the Hand mode.
Elapsed time between updates. This is the elapsed time in seconds used by the
control algorithm to calculate the process output.
Set to true when the specified AtuneData has been acquired by the PIDE
instruction.
Set to true when auto tuning has been initiated.
Set to true when auto tuning has completed.
Set to true when auto tuning has been aborted by the user or due to errors that
occurred during the auto tuning operation.
Set to true when the specified AtuneData could not be acquired because it is
currently acquired by another PIDE instruction.
Status of the function block.
The instruction detected one of the following execution errors. This is not a
minor or major controller error. Check the remaining status bits to determine
what occurred.
Process variable (PV) health bad.
Control variable (CV) health bad.
HandFB value health bad.
Invalid span of PV. PVEUMax £ PVEUMin.
SPProg < SPLLimit or SPProg > SPHLimit. The instruction uses the limited value
for SP.
SPOper < SPLLimit or SPOper > SPHLimit. The instruction uses the limited
value for SP.
SPCascade < SPLLimit or SPCascade > SPHLimit. The instruction uses the
limited value for SP.
Limits invalid: SPLLimit < PVEUMin, SPHLimit > PVEUMax, or SPHLimit <
SPLLimit. If SPHLimit < SPLLimit, the instruction limits the value using SPLLimit
RatioProg < RatioLLimit or RatioProg > RatioHLimit. The instruction limits the
value for Ratio.
RatioOper < RatioLLimit or RatioOper > RatioHLimit. The instruction limits the
value for Ratio.
Chapter 1
77