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ICP DAS PMC-523x/PMC-224x/PMD Series User Manual
AI<10mA, THEN DO=ON, ELSE DO=OFF, that means,
when AI receives a signal which is lower than 10mA, the DO
channel will change to ON immediately, however, when the
AI channel value exceed 10mA, the DO channel will not
change back to OFF immediately until the value reaches
12mA (10mA plus the Deadband value 2mA), as shown in the
following figure.
Figure7-23 :
AI Deadband Operation(< or <= a numerical value)
(c) In the IF Condition, when AI
=
a numerical value:
Assuming the Deadband value is set to be 1 mA, and the
following statements are defined in the related logic Rule: IF
AI = 9mA, THEN DO=ON, ELSE DO=OFF, that means,
when AI receives a signal between 8mA (9mA minus the
deadband value 1mA) and 10mA (9mA plus the deadband
value 1mA), the DO channel will change to ON immediately.
However, when the AI channel value exceed 10mA, or is
lower than 8mA, the DO channel will change to OFF, as
shown in the following figure.
Figure7-24 :
AI Deadband Operation(= a numerical value)
92
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