Weigh Scale Mode
2.4.1
Parameters
Display units: The units to use when displaying mass. Available units are
μ
g (displayed as ug), mg, g, kg,
ounces (oz), pounds, (lb), and stone (st). See
for details.
Averages: Number of points to use when reading weight. The choices available are 2, 4, 8, 10, 16, 32,
50, 64, 100, and 128. The default is 50.
ADC speed: This parameter selects between the two data rates on the ADS1232, which are called
high-speed and low-speed. When high-speed mode is selected,
FAST
is shown; for low-speed mode,
SLOW
is shown.
(1)
The actual data rate of the ADS1232 depends on the frequency of the master clock, f
CLK
. In fast mode, the
data rate is f
CLK
/61440; in slow mode, the data rate is f
CLK
/491520. See the
for further
information.
The default setting is low-speed mode.
Calibration weight: This parameter gives the expected mass of the calibration weight used in the
calibration procedure (
). The calibration mass can be given in any of the available units, in
three significant figures. The unit is independent of the display unit.
Each digit in the mass is adjusted separately. The currently-selected digit flashes, and can be adjusted
with the PARM buttons. The VALUE buttons are used to select the digit. The unit is adjusted in the same
manner, and flashes when selected.
When the unit is changed, the value changes to the equivalent mass in the new unit.
Channel Selection: This parameter selects between the two analog input channels. Channel 1 uses
either the header or the IN1 connections on the terminal block. Channel 2 uses the IN2 connections on
the terminal block.
Offset calibration: This screen has the same function as it does in Analysis mode. See
for
information.
Save parameters: This screen allows the settings of the ADS1232REF to be stored in flash memory. It
functions the same as it does in Analysis mode. When either PARM button is pressed on this screen, the
ADS1232REF saves its settings to flash memory. These settings are loaded from flash memory when the
board is reset or powered on. All operating parameters are saved, including scale calibration settings,
voltage reference, display mode, and units.
Version number: This screen displays the version number of the ADS1232REF firmware.
(1)
The ADS1232REF cannot detect the frequency of the ADS1232 master clock, so it cannot display the actual data rate of the ADS1232
device.
10
ADS1232REF User
'
s Guide
SBAU120B
–
November 2005
–
Revised July 2011
Copyright
©
2005
–
2011, Texas Instruments Incorporated