Rice Lake 920i USB Installation Manual V5.05 - Manual (Page 64)

58 920i Installation Manual
4.3 Serial Command Calibration
To calibrate the indicator using serial commands, the
serial port must be connected to a terminal or personal
computer. See Section 2.3.4 on page 11 for serial port
pin assignments; see Section 10.0 on page 94 for more
information about using serial commands.
Once the indicator is connected to the sending device:
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 4 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 4 Scales display, then follow the steps listed
below to calibrate the scale. See Section 5.0 on page 60
for a general overview of the iRev 4 utility.
1. On the first Calibration Wizard display (see
Figure 4-3), select whether you are performing
a standard (zero and span) calibration or a
multi-point linear calibration. Click the
Next
button to continue.
Figure 4-3. iRev 4 Calibration Wizard
2. Next (see Figure 4-4), select the scale you wish
to calibrate.
Figure 4-4. iRev 4 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 4 Test Weight Value Display