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MVI56E-AFC / MVI69E-AFC ♦ Enhanced Liquid and Gas Flow Computer
Configuring Meter Groups
ControlLogix® and CompactLogix™
Setup and Configuration Guide
ProSoft Technology, Inc.
Page 50 of 151
The
Component Analysis
dialog box for a member of the parent’s group would look like
the following screen capture. Note that many of the parameters are disabled (grayed
out). That is because the values for these parameters are sourced from the meter-group
parent.
These two categories of parameters are explained in further detail in the following
subsections.
Group-Parent Not Applicable
“Group-Parent Not Applicable” means that a data point has no meaning or relevance to
a group-parent. When written to a group-member, these points behave as if the meter
were autonomous, fully independent from other meters. When such a parameter is
written to a group-parent, however, the change attempt is denied by overwriting the
request with the original before verification, exactly the same technique as denying
changes to “Group-Member Full Propagation” points of group-member meters.
An e
xample of a “Group-Parent Not Applicable” module is meter physical device. Only a
group-member or autonomous meter can have an associated physical device. Such a
device is meaningless for a group-parent, which represents only the consolidation of
measurement data from its membership.
Other examples of “Group-Parent Not
Applicable
” configuration parameters include the following:
acknowledge alarms
meter process input calibration
densitometer
meter process input scaling
low pulse flow threshold
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