Omron NT31

399
Graphs
Section 7-10
<When “Pen Reco” is set for “Type”>
With the pen recorder type, the latest drawing position is always displayed at the
edge of the graph area. As time passes, the part of the graph which is already
displayed moves in the direction specified by “Direction” (as if paper were mov-
ing underneath a pen). When the direction of motion is “right”, the display
changes in the manner shown below. When the line reaches the edge of the
graph area, the data is cleared from the oldest first.
Direction of
motion →
f: Latest data
To start, the
NT31/NT31C
draws a line
from 0 to the
latest data.
f: Latest data f: Latest data f: Latest data f: Latest data
The data is
progressively
cleared, oldest
first.
The drawing results with each “Direction” setting are indicated below.
100% 100%
100%
100%
“Up”:
The drawn line moves
upward.
Direction of motion
“Down”:
The drawn line moves
downward.
Direction of motion
“Left”:
The drawn line moves
to the left.
“Right”:
The drawn line moves
to the right.
Direction of motion
Direction of motion
S Method for calculating the percentage value
The percentage value is calculated as follows, depending on whether it is larger
or smaller than the “0%” value.
- When displayed numeric value  “0%”, or when a check mark is set for ”Dis-
play Sign”:
Percentage value =
[100%] − [0%]
Displayed numeric value − [0%]
 100
- When displayed numeric value < “0%”:
Percentage value =
[0%] − [−100%]
Displayed numeric value − [0%]
 100