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GFK-0467K Chapter 2 System Operation 2-11
2
In the default Run-to-Completion mode, the length of the system communications window is
limited to 50 milliseconds. If an intelligent option module makes a request that requires more than
50 milliseconds to process, the request is spread out over multiple sweeps so that no one sweep is
impacted by more than 50 milliseconds.
DEQUEUE A REQUEST
RESTART POLLING
ANY
POLLING
TIMEOUT
PROCESS THE REQUEST
YES
NO
YES
NO
NO
YES
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START
STOP
?
IN QUEUE
REQUESTS
?
?
STOPPED
TIMER
WINDOW
Figure 2-3. System Communications Window Flow Chart