Allen-Bradley LOGIX 5000 Reference Manual page 361

Select_Limit Instructions
Structured Text
Condition/State
Prescan
Normal Execution
Postscan
Example
This HLL instruction limits In between two values and sets HighAlarm or
LowAlarm, if needed when In is outside the limits. The instruction sets Out =
limited value of In.
Function Block
Structured Text
HLL_01.In := value;
HLL_01.HighLimit := high_limit;
HLL_01.LowLimit := low_limit;
HLL(HLL_01);
limited_value := HLL_01.Out;
high_alarm := HLL_01.HighAlarm;
low_alarm := HLL_01.LowAlarm;
See also
Common Attributes
Structured Text Syntax
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
Action Taken
See Prescan in the Function Block table.
See Tag.EnableIn is true in the Function Block table.
See Postscan in the Function Block table.
on page 537
on page 508
Chapter 4
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