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EXAMPLE: The counter display is used to indicate the total
feet units to be displayed. The decimal point is selected to
show the resolution in hundredths.
Scale Factor = Desired Display Units x Decimal point Position
Give that 128 pulses are equal to 1 foot, display total feet with a one
hundredth resolution.
Scale Factor = 1.00 x 100
Scaling for Rate Indication
Scaling the Rate involves programming the DP21 so that input
Frequency to the unit are scaled to the desired display units.
Note : It is not necessary to increase the pulse information to obtain
higher resolution.
The operator keys-in a display value and a corresponding rate value.
The location of the scaling point should be near the process end limit for the
best possible accuracy. Once these values are programmed, the indicator
calculates the slope of the rate display automatically and scaling is complete
after decimal point selection. Input frequency can be read directly if rate
display and rate input value is programmed to „1‟ and „1.0‟.
Note : The rate display will flesh "r OLOLOL" if the display exceeds
999,999 which means the unit must be re-scaled.
DISPLAY
Wisnu and Supak Co., Ltd 102/111-112 Tessabansongkroh Rd., Ladyao, Jatujak, Bangkok 10900
Tel (662)591-1916, (662)954-3280-1, Fax (662)580-4427, www.wisco.co.th, E-mail
Number of pulse
128
= 0.007812 x 100
= 0.7812
rAtE INP = 10000.0 Hz
rAtE dSP = 5000
0
10
KHz
NOTE: STARTING POINT OF SLOPE
DIAGRAM IS ALWAYS ZERO (0)
WISCO DP21 Manual V1.1
INPUT
number of
Page 7 of 8
info@wisco.co.th
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