Rice Lake 920i Installation Manual V4.01 - Manual (Page 63)

Calibration 57
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 89 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
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
SC.WLIN#n.C1
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 59 for a general overview of the
iRev 4 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 stand ard (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