WattMaster WCC II - Manual (Page 61)

Section 3: Screen Descriptions
WCC II Operator’s Guide
Operator Interfaces 3-29
Record value of: ______once every _____ minutes
Specifi es the [analog] point address for which the analog trend is
to be recorded. Also specifi es the time interval between samples in
either minutes or hours. Because this is a “choice” fi eld, the list of
available choices will be displayed at the bottom of the screen:
CHOICES:
Make your selection by pressing the once for each
choice until the desired units of time have been selected.
Starting at: 00:00 on 00/00
Specifi es the time and date that the trend log recording should begin.
(The time is represented in 24-hour format.) The system considers
*’s in these positions to be “wild cards.” Therefore, if you want the
system to always log the analog trend values independent of the
time, enter “*:* on */*.”
Reset by ___________ being _______
Specifi es the [binary] point address that will be used to reset (or
clear) the record trend log data. The fi rst fi eld specifi es the point
address, and the second specifi es the state or condition that the
point address needs to be in in order to clear the data.
_______ after 48 readings
Specifi es whether the data logging process will stop after 48
readings have been taken or will continue (roll over).
Trend Log Graph
The Analog Trend Screen has a graph which can be accessed by
pressing
and , holding both keys down for an instant
and then releasing both keys at the same time. A graph which
shows the value of the analog global versus time should appear on
the screen. If the ECC/WCC II system is “re-painting” the screen
at the moment you access the graph, the full graph will not be
displayed. To make sure that you get a full graph on the screen,
move the cursor to the “Home” position on the screen, and press
while the cursor is blinking at the HOME position.
After the graph appears on the screen, the upper and lower range
values on the scale may be changed. A Graphic Help Menu is
available from the screen with the graph by pressing
and
, holding both keys down at the same time for an instant and
then releasing both keys. The following menu should appear:
--------------Graphic Help Menu-----------
Alt B : Assign the bottom number of the
display range
Alt T : Assign the top number of the display
range
If you want to change the bottom scale of the screen, press
and then , holding both keys down at the same time for an
instant and then releasing both keys. The system will prompt you
for the number you want to use for the bottom of the scale. Type
in the number and then press
. If you want to change the
top scale on the screen, press and then , holding both
keys down for an instant and then releasing both keys. The system
will then prompt you for the number to be used for the top of the
scale. The modifi ed scale values will be erased when you leave the
screen by pressing the space bar.
Save/Retrieve Data on Disk
A “snap-shot” of the values on the Analog Trend Screen can be
saved on the data disk in the CPU by pressing
while the
Trend Log Screen appears on the monitor. The data can be retrieved
by pressing
. After you press , the following message
will appear on the bottom of the screen:
Press ‘M’ for manual search, ‘A’ for auto-
search
If you press , the system will search for the most recent data
fi le. If you press , the following set of prompts will appear one
at a time on the bottom of the screen:
Year of Data File to Load {Enter} for current
value: [1987]
Month of Data File to Load {Enter} for current
value: [1-12]
Day of Data File to Load {Enter} for current
value: [1-31]
Hour of Data File to Load {Enter} for current
value: [1-23]
When the system fi nds the data fi le, the values that were saved on
disk will be displayed on the screen with the following message at
the bottom of the screen:
Data from disk, Ctrl-G to Plot, and ‘F’
and ‘B’ to search
If you want to plot the data on a graph, press . If you
want to search back in time press , and if you want to search
forward in time, press .