Product Description
The CPU also tells this module in which rate group each channel is to run, as
well as any special information (such as the type of thermocouple in the case of a
thermocouple module). At run time, the CPU then periodically broadcasts a "key"
to all I/O cards, telling them which rate groups are to be updated at that time.
Through this initialization/key broadcast system, each I/O module handles its
own rate-group scheduling with minimal CPU intervention.
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