Eaton easyE4 Manual page 523

6.2.2 IE - Edge-controlled interrupt
6.2.2.1 General
Only possible with easySoft 7.
easyE4 base devices provide 8 edge-controlled interrupt function blocks,
IE01 through IE08. This does not apply to the EDP programming language.
easyE4 makes it possible to quickly respond to various events. This
makes it possible, for instance, to switch outputs on or off outside of the
main program's routine. Only bit operators are allowed within an inter-
rupt program.
The following events can trigger an interrupt:
Rising, falling, rising, and falling edges at device inputs I1 through I8,
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function block IE01 through IE08.
Execution time for an interrupt
The time between the moment the event is detected and the moment
there is a response at a device output is < 1 ms. To this end, the base
device's QP physical output must be set.
If multiple interrupts are executed simultaneously, the times add up.
NOTICE
Use each device input from I1 to I8 only once in each inter-
rupt function block. Otherwise, an error message will be
output during the plausibility check and it will not be pos-
sible to load the program onto the device.
In total, no more than 8 interrupt sources are allowed to be
processed in a single program. The valid interrupt sources
are the IC, IE, IT interrupt function blocks and the CF, CH,
and CI high-speed counters that are directly connected to
the device inputs.
If there are multiple interrupt requests present sim-
ultaneously, the first detected interrupt program will be
executed, after which the remaining ones will be executed
based on the corresponding order.
While the interrupt program is being processed and during
a configured delay, any other incoming interrupts at the
function block inputs of the same instance will not be detec-
ted.
easyE4 10/19 MN050009 EN www.eaton.com
6. Function blocks
6.2 interrupt function blocks
519