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Points
Specify the minimum number of scan periods for a given controller because the
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server requires a separate scan for each scan period. For example, you might only
need two scan periods for a particular controller: a short one for a few critical
values, and a long one for all other values.
For each scan period you use, specify the longest period that is acceptable to your
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needs.
Arrange parameter value addresses so that they occupy contiguous addresses in the
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controller's memory, as shown in the following figure. If parameters occupy
contiguous addresses, the server can access many parameters in a single scan—the
exact number is controller-specific.
Estimating the number of points required
Based on your analysis of your system and the role that you want Experion to perform,
estimate the number of points you need to define. Use this figure, with an appropriate safety
margin, to determine your licensing requirements.
Remember that the composite nature of Experion points means that you do not need one point
per I/O value.
Honeywell 2017
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