Rice Lake 920i Installation Manual V3.12 - Manual (Page 60)

54 920i Installation Manual
4.3 Serial Command Calibration
To calibrate the indicator using serial commands, the
indicator serial port must be connected to a terminal or
personal computer. See Section 2.3.3 on page 10 for
serial port pin assignments; see Section 9.0 on
page 86 for more information about using serial
commands.
Once the indicator is connected to the sending device,
do the following:
1. Place the indicator in setup mode (display
reads
CONFIG
) and remove all weight from the
scale platform. If your test weights require
hooks or chains, place the hooks or chains on
the scale for zero calibration.
2. Send the SC.WZERO#n serial command
(where n is the number of the scale) to
calibrate zero.
3. Place test weights on the scale and use the
SC.WVAL command to enter the test weight
value in the following format:
SC.WVAL#n=vvvvv<CR>
4. Send the SC.WSPAN#n serial command to
calibrate span.
5. Up to five linearization points can be calibrated
between the zero and span calibration values.
Use the following commands to set and
calibrate a single linearization point:
SC.WLIN#n.V1=vvvvv<CR>
SC.WLIN#n.C1<CR>
The SC.WLIN#n.V1 command sets the test
weight value (vvvvv) for linearization point 1.
The SC.WLIN#n.C1 command calibrates the
point. Repeat using the SC.WLIN#n.Vx and
SC.WLIN#n.Cx commands as required for
additional linearization points.
6. To remove an offset value, clear all weight
from the scale, including hooks or chains used
t o h a n g t e s t w e i g h t s , t h e n s e n d t h e
SC.REZERO#n serial command.
7. Send the KSAVEEXIT serial command to
save the calibration changes and exit setup
mode.
4.4 iRev Calibration
The
iRev
Calibration Wizard provides step-by-step
scale calibration. With the
920i
connected to the PC,
select the Calibration Wizard from the Tools menu on
the
iRev
Scales display, then follow the steps listed
below to calibrate the scale. See Section 5.0 on
page 56 for a general overview of the iRev utility.
1. On the first Calibration Wizard display (see
F i g u r e 4 - 3 ) , s e l e c t w h e t h e r y o u a r e
performing a standard (zero and span)
calibration or a multi-point linear calibration.
Click the
Next
button to continue.
Figure 4-3. iRev Calibration Wizard
2. Next (see Figure 4-4), select the scale you
wish to calibrate.
Figure 4-4. iRev Scale Selection Display
3. Enter the test weight used to calibrate the
scale (see Figure 4-5). If chains or hooks are
used to hold the weights, check the box below
the test weight value entry. This adds a rezero
step to the calibration sequence.
Figure 4-5. iRev Test Weight Value Display