Allen-Bradley LOGIX 5000 - Page 225

Process Control Instructions
Chapter 1
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018 225
Output
Parameters
Data
Type
Description Values
CV3ROCPosAlarm BOOL CV3 rate of change alarm indicator. TRUE when the
calculated rate of change for CV3 exceeds
CV3ROCPosLimit.
CV1ROCNegAlarm BOOL CV1 rate of change alarm indicator. TRUE when the
calculated rate of change for CV1 exceeds
CV1ROCNegLimit.
CV2ROCNegAlarm BOOL CV2 rate of change alarm indicator. TRUE when the
calculated rate of change for CV2 exceeds
CV2ROCNegLimit.
CV3ROCNegAlarm BOOL CV3 rate of change alarm indicator. TRUE when the
calculated rate of change for CV3 exceeds
CV3ROCNegLimit.
SP1 REAL Current setpoint 1 value. The value of SP1 is used to
control CV when in the Auto or the PV1 Tracking
mode, scaled in PV1 units.
SP2 REAL Current setpoint 2 value. The value of SP2 is used to
control CV when in the Auto or the PV2 Tracking
mode, scaled in PV2 units.
SP1Percent REAL The value of SP1 expressed in percent of span of
PV1.
SP1Percent = ((SP1 − PV1EUMin ) * 100) /
PV1Span
where PV1Span = PV1EUMax – PV1EUMin
SP2Percent The value of SP2 expressed in percent of span of
PV2.
SP2Percent = ((SP2 − PV2EUMin ) * 100) /
PV2Span
where PV2Span = PV2EUMax – PV1EUMin
SP1HAlarm BOOL SP1 high alarm indicator. TRUE when the SP1 >=
SP1HLimit.
SP2HAlarm BOOL SP2 high alarm indicator. TRUE when the SP2 >=
SP2HLimit.
SP1LAlarm BOOL SP1 low alarm indicator. TRUE when the SP1 <=
SP1LLimit.
SP2LAlarm BOOL SP2 low alarm indicator. TRUE when the SP2 <=
SP2LLimit.
PV1Percent REAL PV1 expressed in percent of span.
PV1Percent = (( PV1 − PV1EUMin ) * 100) /
PV1Span
PV1 Span calculation: PV1Span =
( PV1EUMax - PV1EUMin )
PV2Percent REAL PV2 expressed in percent of span.
PV2Percent = (( PV2 − PV2EUMin ) * 100) /
PV2Span
PV2 Span calculation: PV2Span =
( PV2EUMax − PV2EUMin )
E1 REAL Process1 error. Difference between SP1 and PV1,
scaled in PV1 units.