Allen-Bradley LOGIX 5000 Reference Manual page 75

Process Control Instructions
TimingMode DINT
OversampleDT REAL
RTSTime DINT
RTSTimeStamp DINT
AtuneAcquire BOOL
AtuneStart BOOL
AtuneUseGains BOOL
AtuneAbort BOOL
AtuneUnacquire BOOL
Output Parameter Data Type Description
EnableOut BOOL
CVEU REAL
CV REAL
CVInitializing BOOL
CVHAlarm BOOL
CVLAlarm BOOL
CVROCAlarm BOOL
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
Selects timing execution mode.
0 = Periodic mode
1 = Oversample mode
2 = Real time sampling mode
For more information about timing modes, see Function Block Attributes.
Valid = 0 to 2
Default = 0
Execution time for oversample mode.
Valid = 0 to 4194.303 seconds
Default = 0
Module update period for real time sampling mode
Valid = 1 to 32,767ms
Default = 1
Module time stamp value for real time sampling mode.
Valid = 0 to 32,767ms
Default = 0
Acquire PIDE AtuneData request.
Default is false.
Start Autotune request.
Default is false.
Use Autotune gains request.
Default is false.
Abort Autotune request.
Default is false.
Unacquire PIDE AtuneData request.
Default is false.
Indicates if instruction is enabled. Cleared to false if CVEU overflows.
Scaled control variable output. Scaled using CVEUMax and CVEUMin, where
CVEUMax corresponds to 100 percent and CVEUMin corresponds to 0 percent.
This output typically controls an analog output module or a secondary loop.
CVEU = (CV x CVEUSpan / 100) + CVEUMin
CVEU span calculation: CVEUSpan = (CVEUMax - CVEUMin)
Control variable output. This value is expressed as 0 to 100 percent. CV is limited
by CVHLimit and CVLLimit when in auto or cascade/ratio mode or manual mode
if CVManLimiting is true. Otherwise this value is limited by 0 and 100 percent.
Initialization mode indicator. CVInitializing is set to true when CVInitReq is true,
during instruction first scan, and on a true to false transition of CVHealth (bad to
good). CVInitializing is cleared to false after the instruction has been initialized
and CVInitReq is false.
CV high alarm indicator. Set to true when the calculated value of
CV > 100 or CVHLimit.
CV low alarm indicator. Set to true when the calculated value of
CV < 0 or CVLLimit.
CV rate of change alarm indicator. Set to true when the calculated rate of
change for CV exceeds CVROCLimit.
Chapter 1
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