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6.3. Digital Linearization (
)
Digital linearization is the non-linearity compensation function that can rectify or
reduce linearity deviation between zero point and weighing capacity.
Up to four points can be specified except zero. (Refer to
)
Relationship of points : Zero =
<
<
<
<
The high-order correction curve is used so that zero point and individual points
are arranged in a straight line.
Digital linearization includes span calibration.
When
and a number are displayed, an error has occurred. Refer to
"Calibration Error" for details.
A flashing decimal point means "no weighing value".
Before calibration, turn on the AD4430B more than 10 minutes so as to avoid
temperature drift (change).
Step 1 When turning off the display, press and hold
key
the
key and press the
key (
+
key). Then
of calibration mode
key
is displayed. Press the
key to display
.
key
Step 2 Press the
key to select
and
press the
key to enter digital
key
linearization.
Zero point
Step 3
of the zero point is displayed.
Step 4 Place nothing on the pan.
LED Stable
While
LED is displayed, press the
key
key to store the weighing value.
In measuring
Then
is displayed for 2 seconds.
Input No.
Step 5 When displaying
,
key
press the
key to select
Example
a mass value. Specify it using
At each point,
key
the
and
key.
perform the
Example
same
Step 6 Place the mass on the pan.
operation and
Place mass
While
LED is displayed,
measurement.
press the
key to store
LED Stable
key
the weighing value.
Then
is displayed
In measuring
for 2 seconds.
Step 7
is displayed. Repeat the same
Input No.
operation as Step 5 and Step 6 at the
The same as step 5,6
second point.
Input No.
Step 8
is displayed. Repeat the same
The same as step 5,6
operation as Step 5 and Step 6 at the third
Input No.
point.
The same as step 5,6
Step 9
is displayed. Repeat the same
operation as Step 5 and Step 6 at the fourth
Key to store data
point.
Step 10
is displayed. Press the
key
key
to store new parameters into FRAM and
Remove
display
.
mass
Step 11 Press the
key to return to weighing mode.
Remove all of mass from the pan.
7. Function Mode (Function List)
The function mode stores parameters to control the weighing module.
The parameters are stored even without power supplied.
7.1. Outline
Types of Functions
............ Calibration
............ Linearity
............. Basics
............ Hold function
............ BCD output
The input voltage of the zero point (
), the span input voltage (
mass for span input voltage (
) are revised in calibration mode.
The decimal point flashes in function mode.
If pressing the
key while displaying the digital filter (
), the current
weighing value can be monitored. Press the
key again to return function
mode.
-5-
7.2.
Operation
7.2.1.
Select Modes Under Function Mode
.............. Selects a type of select mode (3 upper figures)
.......... Enters a selected mode.
.............. Selects an item under the selected mode (2 lower figures)
.......... Enters the item.
.......... Stores parameters and returns to weighing mode.
7.2.2.
Parameters Selection And Digital Parameters
P
Type of parameter selection ( all figures flashing)
.......... Selects a parameter.
....... Activates (store) parameter and returns to select mode.
....... Deactivates parameter and returns to select mode.
D
The type to change value ( figure flashing )
.......... Moves the flashing figure.
.......... Changes the value of the flashing figure.
....... Activates (store) value and returns to select mode.
Digital
....... Deactivates value and returns to select mode.
linearization
7.3.
Types and Items
7.3.1.
Calibration (
) Of Select Mode
Item
Item Name
Descriptions
Range
Decimal point
Decimal point position of value.
0 to 0.0000
position
0 0.0
0.00
0.000
Minimum division
Minimum division of value.
1 to 50
(A scale / digit)
1
2
5
10
Measurement can be displayed up to +8 digits
Weighing capacity
(8 scales) from capacity. Decimal point
1 to 99999
(Max. measurement)
depends on
.
Zero adjustment
The range that the
0 to 100
range
Deviation from the calibrated zero point [%].
Zero tracking time Used with
for zero tracking [sec.]
0.0 to 5.0
Zero tracking band Used with
for zero tracking [digit]
0.0 to 9.9
Stability detection
Used with
for stability detection [sec.]
0.0 to 9.9
time
Stability detection
Used with
for stability detection [digit]
0 to 9
band
Tare and zero
The adjustment when value is unstable.
adjustment when
0: Disables both functions.
0 to 1
unstable
1: Enables both functions.
Tare when the
Tare when the gross weight is negative.
gross weight is
0: Disables tare.
0 to 1
negative
1: Enables tare.
Output when
Serial output when overflow and unstable.
overflow and
0: Disables output.
0 to 1
unstable
1: Enables output.
Judgment when the negative gross is exceeded.
Exceeding negative
1: Gross < -99999
1 to 3
gross weight
2: Gross < -capacity
3: Gross < -19 digit
Exceeding negative
Judgment when the negative net is exceeded.
1 to 2
net weight
1: Gross < -99999 2: Gross < -Capacity
Clear the zero
Select to clear the zero value.
0 to 1
value
0: Disable
Zero setting when
When turning power on,
0 to 1
power is turned on
0: Disable
Input voltage at
-7.0000 to
Input voltage of the zero point [mV/V]
zero
7.0000
Input voltage at
0.0001 to
Input voltage of the full scale [mV/V]
span
9.9999
Calibration weight
Mass value to equivalent to span input
corresponding to
voltage. (
) Decimal point depends on
1 to 99999
input voltage at span
.
),
Gravity acceleration
Gravity acceleration of the place where
9.7500 to
of place of
calibrating the module. [m/s
9.8500
calibration
Gravity acceleration
Gravity acceleration of the place where using
9.7500 to
2
of place of use
the module. [m/s
]
9.8500
Disable averaging
When turning on, the zero operation.
0 to 1
hold
0: Enable
-6-
7.3.2.
Linearity (
) Of The Select Mode
Item
Item Name
Range
Number of input
Number of adjustment point. If 0, 1 or 2 is
1 to 4
points
selected, digital linearization is not used.
7.0000 to
Linear-zero
Input voltage for linear-zero input. [mV/V]
7.0000
Linear 1
The mass value for linear 1 input.
0 to 99999
Mass value
Decimal point depends on
Linear 1
The span voltage between linear-zero and linear
0.0000 to
Span voltage
1 input. [mV/V]
9.9999
Linear 2
The mass value for linear 2 input.
0 to 99999
Mass value
Decimal point depends on
Linear 2
The span voltage between linear-zero and linear
0.0000 to
Span voltage
2 input. [mV/V]
9.9999
Linear 3
The mass value for linear 3 input.
0 to 99999
Mass value
Decimal point depends on
Linear 3
The span voltage between linear-zero and linear
0.0000 to
Span voltage
3 input. [mV/V]
9.9999
Linear 4
The mass value for linear 4 input (Full scale).
Default
0 to 99999
Mass value
Decimal point depends on
Type
Linear 4
The span voltage between linear-zero and linear
0.0000 to
0
Span voltage
4 input (Full scale). [mV/V]
9.9999
0.0000
P
1
7.3.3.
Basics (
) Of The Select Mode
20
50
P
Item
70000
Item Name
Range
D
Figure corresponds to each key (switch).
key (zero key) works.
2
These are enabled at weighing mode.
Disable key
D
0000
Figure
switchs
0.0
to 1111
D
Parameter
0.0
0: None
D
1: Print command
1.0
key
2: Hold
0 to 7
D
3: Alternative switch 7: Zero clear
2
P
Display update
1: 20 times/s
1 to 3
rate
1
P
0: None
1: Zero tracking in progress
2: Alarm (Zero range setting error, over)
1
3:
P
4: Zero band
display
0 to 9
5: HI output (Over the upper limit value)
1
6: OK output (Between upper and lower limit values)
P
7: LO output (Below the lower limit value)
8: User input 1
9: User output 1
1
P
Selects a cutoff frequency.
0: None
1: 100.0 Hz
1
Low pass digital
2: 70.0 Hz
P
0 to 16
filter
3: 56.0 Hz
1
4: 40.0 Hz
1: Enable
P
5: 28.0 Hz
0
1: Hold immediately
1: Enable
P
Hold
2: Peak hold
1 to 3
3: Averaging hold
0.0000
D
Set value of
The reference value for near-zero.
-99999 to
near-zero
Decimal point depends on
99999
3.2000
D
Mass to be compared
1: Gross weight
1 to 2
with near-zero
32000
Set value of
Reference value for the upper limit.
D
-99999 to
upper limit
Decimal point depends on
99999
9.8000
Set value of
Reference value for the lower limit.
-99999 to
2
]
D
lower limit
Decimal point depends on
99999
Mass to be compared
9.8000
1: Gross weight
1 to 2
with upper & lower limit
D
Output logic of upper
The logic of the comparator function output.
0
1 to 2
and lower limit
1: Positive logic
1: Disable
P
7.3.4.
Hold Function (
Default
Item
Descriptions
Item Name
Type
Range
0
Average
0.00
P
to 9.99
0.0000
Start wait
D
0.00
to 9.99
0
Condition of
.
D
automatic
0 to 2
0.0000
D
Release due
to falling
0
0 to 1
control input
.
D
0.0000
0.00
Time release
D
to 9.99
Release due
0
to range of
.
D
0 to 99999
fluctuation
0.0000
Release in
D
near-zero
0 to 1
0
.
D
7.3.5.
BCD Output (
0.0000
D
Item
Item Name
Range
Output data
1 to 4
Default
Data transfer
Descriptions
Type
1 to 3
0000
Data transfer
2 進数
4 fig.
3 fig.
2 fig.
1 fig.
5 to 1000
D
0: Enable
1: Disable
4: Momentary switch
Output logic of
5: Display exchange
1 to 2
data transfer
5
6: Tare clear
Output logic of
P
1 to 2
negative sign
(depends on
)
Output logic
20
1 to 2
of status
2: 10 times/s
3: 5 times/s
P
Output logic
1 to 2
of strobe
key status
0
0 to 5
selection
P
6: 20.0 Hz
12: 2.8 Hz
7: 14.0 Hz
13: 2.0 Hz
15
8: 10.0 Hz
14: 1.4 Hz
P
9: 7.0 Hz
15: 1.0 Hz
0 to 12
selection
10: 5.6 Hz
16: 0.7 Hz
11: 4.0 Hz
1
P
10
.
D
1
2: Net weight
P
10
.
D
3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, JAPAN
Telephone: [81] (3) 5391-6132
-10
.
D
1
2: Net weight
P
1
2: Negative logic
P
-7-
) Of The Select Mode
Default
Descriptions
Type
Time to calculate the average. [sec.]
0.00
time
0.00 : Not used
D
Time to wait before commencing hold or
0.00
time
averaging. [sec.]
D
Condition for starting the hold or averaging.
0
0: Not used
2: Above the near-zero range
P
start
1: Above the near-zero range, and stable
Release when control input is falling.
1
0: Do not release
1: Release
P
Release after a set amount of time has
0.00
passed. [ sec.] 0.00 : Continue
D
Release when fluctuation from the holding
0
value exceeds a set value. Decimal point
D
depends on
. 0 : Continue
Release when the weighing value is in the
0
near-zero range.
P
range
0: Do not release.
1: Release.
) Of The Select Mode
Default
Descriptions
Type
1: Weighing value 3: Net weight
1
2: Gross weight
4: Data specified at BCD input
P
1: Stream
3: Manual printing
1
mode
2: Automatic printing
P
5 times/sec.
10 times/sec.
(Depends on
)
20
20 times/sec.
rate
P
100 times/sec.
1000 times/sec.
2
1: Positive logic
2: Negative logic
P
2
1: Positive logic
2: Negative logic
P
2
1: Positive logic
2: Negative logic
P
2
1: Positive logic
2: Negative logic
P
0: None
1: Clear zero
Input
2: Clear tare
3
3: Changing between gross and net
P
4: Print command
5:
key
0: None
1: Stabilization
2: During tare
3: Zero band
4: Hold busy state
5: HI output (Over upper limit)
Output
1
6: OK output (Within upper and lower limits)
P
7: LO output (Under lower limit)
8: During operating weighing (On)
9: During operating weighing (1 Hz)
10: During operating weighing (50 Hz)
11: Alarm (Zero correction error and tare error)
12: Busy
key
Fax: [81] (3) 5391-6148
-8-