100/180MM DISTRIBUTED GRAPHIC RECORDER: USER GUIDE
HA029324
Issue 11 Oct 14
Page 223
Job Number
Action
Category
Group
While
1) Group 1
1
Trend
Speed/Interval B
Active
Select required action
Select Required Group or Point (according to action)
Select 'Active', 'Inactive' or 'Unacknowledged'
4.7.10 Trend category
Trend jobs allow the following actions to occur:
Span B
Switches the point being confi gured to span B and zone B, for as long as the job is active.
Span B Group
Switches all the points in the selected group to their individual spans and zones B, for
as long as the job is active.
Colour B
Switches the point being confi gured to colour B, for as long as the job is active.
Colour B Group Switches all the points in the selected group to their individual colours B, for as long as
the job is active.
Speed/Interval B Switches Trend Speed/Interval for the selected group to Speed/Interval B, for as long
as the job is active.
Note: If a ‘B’ value has not been set, the default ‘A’ value will be used instead
If the Simulation option (
section 4.3.22
) is enabled the following additional Trend jobs become available:
Freeze
Freezes process variables and trend displays and stops the recorder clock (see note).
When the job deactivates, the process values are updated to their current values and
the clock restarts from its frozen value. No
blue line
is drawn across the chart.
Clear
Clears the trend displays from the screen.
Saver Display
Sets the recorder display brightness to the value set up in ‘Saver display’ in Instrument
confi guration (
section 4.3.1
) . Overrides the ‘Save after’ value.
Figure 4.7.10 Trend job menu layout
Note: in order to ensure that no further data is written to the recorder’s history fi les, it is recom-
mended that recording be disabled by setting a second, ‘Recording’, job to be initiated by the
same trigger as initiates the Freeze job. This Recording job should be set to ‘Enable’, ‘while Inac-
tive’. Recording jobs are described i
n section 4.7.9, a
bove.
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