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RS232 Datasheet PDF : 16 Pages
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SCALING FOR COUNT INDICATION
The CUB5’s scale factor is factory set to 1, to provide one count on the
display for each pulse that is input to the unit. In many applications, there will
not be a one-to-one correspondence between input pulses and display units.
Therefore, it is necessary for the CUB5 to scale or multiply the input pulses by
a scale factor to achieve the desired display units (feet, meters, gallons, etc.)
The Count Scale Factor Value can range from 00.0001 to 99.9999. It is
important to note that the precision of a counter application cannot be improved
by using a scale factor greater than one. To accomplish greater precision, more
pulse information must be generated per measuring unit. The following formula
is used to calculate the scale factor.
Scale Factor
=
Desired Display Units
Number of Pulses
x
Decimal Point Position
WHERE:
Desired Display Units: Count display units acquired after pulses that occurred.
Number of Pulses: Number of pulses required to achieve the desired
display units.
Decimal Point Position:
0
=
1
0.0
=
10
0.00
=
100
0.000 =
1000
0.0000 =
10000
0.00000 =
100000
EXAMPLE: The counter display is used to indicate the total number of feet
used in a process. It is necessary to know the number of pulses for the desired
units to be displayed. The decimal point is selected to show the resolution in
hundredths.
Scale Factor
=
Desired Display Units
Number of Pulses
x
Decimal Point Position
Given that 128 pulses are equal to 1 foot, display total feet with a one-
hundredth resolution.
Scale Factor
=
1.00
128
x
100
Scale Factor = 0.007812 x 100
Scale Factor = 0.7812
USER INPUT FUNCTION
USEr INP
NO
DISPLAY
MODE
DESCRIPTION
NO
No Function
User Input disabled.
Pro Loc Program
Mode
Lock-out
See Programming
(Module 3)
Mode
Access
chart.
Inhibit
Inhibit
Inhibit counting for the selected counter(s).
rESEt Maintained Reset Level active reset of the selected counter(s).
StorE
Store
Freeze display of selected counter(s) while
allowing counts to accumulate internally.
Stor-rSt
Store and Reset
Edge triggered reset of the selected
counter(s) after storing the count.
d-SELECt Display Select * Advance once for each activation
d-LEVEL Display Intensity Level
*
Increase intensity one level for each
activation. (backlight version only)
d-COLOr
Backlight Color *
Change backlight color with each activation
(backlight version only)
Print
Print Request
Serial transmit of the active parameters
selected in the Print Options (Module 5)
Prnt-r5t
Print and Reset *
Same as Print Request followed by a
momentary reset of the selected counter(s).
rESEt-1 Setpoint 1 Reset * Reset Setpoint 1 output
rESEt-2 Setpoint 2 Reset * Reset Setpoint 2 output
rESEt-12 Setpoint 1 and 2 Reset * Reset Setpoint 1 and 2 outputs
Note: * indicates Edge Triggered function. Other functions are Level Active
(maintained)
USER INPUT ASSIGNMENT
USEr ASN
Count A
Count A Count b both A-b
The User Input Assignment is only active when Counter B is enabled and the
User Input performs a Reset, Inhibit or Store function on one or both counters.
6.2 MODULE 2 - Rate Setup Parameters (2-rAtE)
2-rAtE
PARAMETER MENU
Pro
SEL
RAtE Enb
RAtE dP
RAtE dSP RAtE INP
LO-Udt
HI-Udt
Rate
Enable
Rate Decimal
Point
Rate Scaling
Display Value
Rate Scaling
Input Value
Rate Low
Update Time
Rate High
Update Time
Module 2 is the programming for the rate parameters. For maximum input
frequency, Rate Enable should be set to NO when not in use. When set to NO, the
remaining rate parameters are not accessible. The rate value is shown with an
annunciator of “R” in the Display Mode.
RAtE Enb
YES
RATE ENABLE
NO YES
RATE DECIMAL POINT
RAtE dP
O
0 0.00 0.0000
0.0 0.000 0.00000
RATE SCALING DISPLAY VALUE
RAtE dSP
001000
0 to 999999
Enter the desired Rate Display Value for the Scaling Point.*
RATE SCALING INPUT VALUE
RAtE INP
01000.0
0.1 to 99999.9
Enter the corresponding Rate Input Value for the Scaling Point.*
This selects the decimal point position for the rate display and any setpoint
value assigned to rate. This parameter does not affect rate scaling calculations.
*For value entry instructions, refer to selection/value entry in the Programming
The Meter section.
8
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