Moxa Technologies ioLogik E2210, User Manual, Page: 101 / 144

ioLogik E2200 Series Click&Go
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More Information about Repeat Interval vs.
Edge Detection
Combining the Timer function with other IF conditions allows actions to be repeated when the specified logic is
sustained over a period of time. However, if a condition is based on edge detection (i.e., ON to OFF or OFF to
ON ), it can only be triggered once.
The following scenarios illustrate how edge detection affects the Timer = N sec . In each diagram, the statuses
of three sensors are shown over a period of time, with a high signal corresponding to a “true” condition. The
green shaded area shows the duration of time that the IF conditions have been met.
No Edge Detection
In this scenario, the rule checks each sensor for “on” status, so edge detection is not involved. As long as the
sensors remain on, the required conditions are satisfied, and the THEN actions will repeat at interval N.
DI-0 = ON
DI-1 = ON
DI-2 = ON
Relation between
conditions
AND OR
“IF” conditions
satisfied
Repeat interval “Timer = N sec” “Timer = N sec”
“THEN” action
triggered
Edge Detection for All Conditions
In this scenario, the rule checks each sensor for a change from “off” to “on” status, meaning only edge
detection conditions are used. As soon as a sensor changes from “off” to “on”, the condition is satisfied, but
only for that instant. Right after that instant, the condition is no longer satisfied because it is no longer
changing from “off” to “on”. The repeat interval will have no effect, since edge conditions cannot be sustained
over a period of time.
DI-0 = OFF to ON
DI-1 = OFF to ON
DI-2 = OFF to ON
Relation between
conditions
AND OR
“IF” conditions
satisfied
Repeat interval N/A N/A
“THEN” action
triggered