40 Rockwell Automation Publication 42EF-UM001A-EN-P - September 2015
Exploring the 42EF IO-Link Parameters
Margin: Displays the status of the sensor margin low alarm. This process data
element is a bit that indicates to the operator if the sensor signal is marginal or
unstable.
Proximity: Displays the status of
the proximity alarm. This process data element
is a bit that indicates if there is an object in close proximity to the threshold
(below 1.0X) when the output is OFF.
Gain: Displays the excess gain above the sensor threshold to ensure reliable
detection
of the target.
Signal: Provides
the raw measurement value of the amount of light reflected
from the target.
Contrast: Displays the differe
nce between the light signal levels that the sensor
read the last time the output was ON versus the last time the output was OFF.
Temp: Displays the current internal temperature of the sensor. This process data
eleme
nt provides the internal temperature value and may increase or decrease
depending on the influence of the ambient temperature on the internal sensor
temperature. This element does not provide a direct and exact temperature
measurement of the ambient temperature in the application.
Count: Displays the
s
ensor counter value when enabled. This process data
element can count up to 65535 and can be reset via explicit messaging to the
appropriate index. Refer to Appendix B for additional information about index.
Duration: Displays the amount of
time that the sensor output has been OFF
(Duration Not Triggered) and ON (Duration Triggered).
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