Allen-Bradley LOGIX 5000 Reference Manual page 128

Chapter 1 Process Control Instructions
128
Alarming
Once the instruction calculates Out, the MaxAlarm and MinAlarm are
determined as follows:
Limiting
Limiting is performed on Out when Limiting is set. The instruction sets Out =
InEUMax when In > InRawMax. The instruction sets Out = InEUMin when In
< InRawMin.
Affects Math Status Flags
No
Major/Minor Faults
None specific to this instruction. See Common Attributes for operand-related
faults.
Execution
Function Block
Condition/State
Prescan
Tag.EnableIn is false
Tag.EnableIn is true
Instruction first run
Instruction first scan
Postscan
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
Action Taken
EnableIn and EnableOut bits are cleared to false.
EnableIn and EnableOut bits are cleared to false.
EnableIn and EnableOut bits are set to true
The instruction executes.
N/A
N/A
EnableIn and EnableOut bits are cleared to false.