Rockwell Automation Publication 871TM-UM002C-EN-P - October 2017
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871TM Long-range Sensor with IO-Link Overview
Chapter 3
871TM Sensor
IO-Link Features
The following features are available in the 871TM sensor:
•
Triggered:
Is the process data bit that communicates the change in state
of the 871TM sensor upon the detection of a target. The status of the
triggered bit can be viewed in a Studio 5000 controller tag.
•
Polarity:
Changes the operation of the triggered parameter. It performs
the same function as normally open or normally closed in standard I/O
(SIO) mode.
•
Margin Status:
Is the process data bit that communicates the target is
within or beyond 80% of the maximum sensing range of the sensor. The
margin status bit can be viewed in Studio 5000 controller tag.
•
Switching Timer Mode
: ability to manipulate the output of the sensor
in relation to timing. It is useful for precision applications where the
output of the needs to be precisely triggered at a certain time.