Graphical Digital Panel Meter WPMZ-3 INSTRUCTION MANUAL
98
IM-0883-01
Infrection hold
Detect the point where the display value changed greatly and holds it as inflection point.
If plus/minus over occurs, inflection point is not detected.
When recovering from plus over or minus over, the inflection point is updated by the value after returning.
Flow of inflection point detection
①
Inflection point is detected and hold when (Amount of change in “InfTimeB”)
－
(Amount of change in
“InfTimeA”)
＞
“InfValueZ”.
②
Each values of formula of
①
are updated per sampling.
You need to set inflection time A (InfTimeA) and inflection time B (InfTimeB) and inflection value Z (InfValueZ).
Since the sign of inflection value Z (InfValueZ) affects detection, the hold operation for each setting is described
below.
Case1. When inflection value Z is 0
Don’t detect.
Case2. When inflection value Z is positive number
Inflection point is detected when
[Amount of change in “InfTimeB”] – [Amount of change in “InfTimeA”]
≧
[InfValueZ]
A
B
Change amount of A
Change amount of A
[
Change amount of B
]
－
[
Change amount of A
]
Ch
an
ge
amou
n
t
of
B
Infrection point
Infrection hold
function state
OFF
Display value
ON
0
OFF
Display value
Infrection hold
