Allen-Bradley LOGIX 5000

Process Control Instructions
Chapter 1
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018 261
The high-to-low alarming algorithm compares SP to the SPHLimit and SPLLimit
alarm limits. SPHLimit cannot be greater than PVEUmaximum and SPLLimit
cannot be less than PVEUMin.
SP High/Low Limiting