FORM 160.72-O1 (810)
JOHNSON CONTROLS
98
TREND SCREEN
DISPLAY ONLY
This screen allows the user to view the graphical trend-
ing of the selected parameters and is also a gateway to
the graph setup screens.
A red screen with the words TREND MAX
MUST BE > TREND MIN wilt appear
if the Y-axis minimum has been pro-
grammed to a value that is greater than
the Y-axis maximum for any parameter. If
this appears, proceed to the Trend Setup
Screen to change the values.
PROGRAMMABLE
Start
Access Level Required: OPERATOR
Pressing this key clears the graph, starts a new graph,
sets the time of day to the present clock time and be-
gins the trending. This key is only available if trending
is stopped. If the selected Chart Type is TRIGGERED
and TRIGGER ACTION is set to START, data collec-
tion will not begin until the Triggers have been satis-
fied and any selected TRIGGER DELAY has elapsed.
Otherwise, data collection will begin immediately.
Stop
Access Level Required: OPERATOR
Pressing this key stops the trending. The trend data
is frozen on the display until another graph is started
with the START key. The STOP key is only available if
trending is running.
Data Select
Access Level required: VIEW
Allows the user to display all trended data points si-
multaneously or select a single trended data point for
display, hiding the other data points. Selections are
ALL DATA or DATA POINT X (1-6).
Print
Access Level Required: VIEW
Allows the data on the trend screen to be printed in
tabular format. If set to EXISTING, a snapshot of the
data presently on the screen is sent to the printer. If set
to NEW, all data collected after pressing this key will
be sent to the printer as it is collected. If set to DIS-
ABLED, no data is sent to the printer.
Y-Axis
Access Level Required: VIEW
This key toggles the Y-axis labels of the graph. Each
key press changes the label to another of the selected
parameters.
X-Axis
Access Level Required: VIEW
This key toggles the X-axis labels of the graph. Each
key press alternates the scaling between time of day
and elapsed time. The Time of Day scaling is in 24-
hour format. The Elapsed Time scaling is the time
elapsed since the START key was pressed, starting the
trending.
NAVIGATION
Home
Access Level Required: VIEW
Returns user to Home Screen.
History
Access Level Required: VIEW
Returns user to Home Screen.
Trend Setup
Access Level Required:
Only displayed if the trending is stopped. Causes a jump
to a subscreen for configuring the trending display.
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