Switching At Comparison Values With Measured Value As Reference - Siemens SIMATIC ST-1500 Function Manual

The basics of counting, measurement and position detection
2.2 Basics of counting, measuring and position input (TM Count, TM PosInput, Compact CPU)
2.2.8.4

Switching at comparison values with measured value as reference

The comparison values are compared with the current measured value. If the measured
value meets the configured comparison condition and the technological function of the
corresponding digital output is enabled, the digital output is set. If you configure "Between
comparison value 0 and 1" or "Not between comparison value 0 and 1" for digital output
DQ1, both comparison values affect DQ1.
You can make switching for a digital output dependent on one of the following comparison
events:
Setting above the comparison value
The digital output is set to 1 if:
Measured value >= comparison value
Setting below the comparison value
The digital output is set to 1 if:
Measured value <= comparison value
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Counting, measurement and position detection
Function Manual, 12/2017, A5E32009889-AG