ABB 800xA Operation page 64

Group Status Display
The trend graph represents one division of trended data (60 sampled points) from
the engineering low limit to the engineering high limit. The most current trend
sample is on the right side of the graph. Trend data is only displayed if the trend rate
is enabled (not 0) for the tag. To see the trend data for a specific time, select on the
trend graph. A trend ruler with the measured value, time and data quality for that
data point is then shown. To view fully functional trends for a group, access the
Group Trend Display.
Figure 19. PID and A/M Status Blocks
Control functions within the block depend on how the loop is configured and user
authority. Setpoint mode and value, computer mode, output mode and value, and
FF/FB are all controllable. The block is context sensitive to its own tag. Double
clicking on the tag name displays the loop faceplate.
Continuous Loop Status Blocks
Continuous loop status blocks show tag name, description, measured value and
engineering units. There are no control items.
Device Loop Status Blocks
Device loop status blocks show tag, descriptor, command state, mode, and state. The
command, mode, and state values can be modified if enabled for control in the
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Section 3 CCF Displays
3BUR002418-600 A