34
IQ plus 710 Installation Manual
Linearization is optional: if you choose not to
perform linearization, skip the WLIN
parameter; if linearization values have
previously been entered, use the numeric
keypad to set each point to zero and press
ENTER
. To perform linearization, follow the
procedure below:
With
WLIN
displayed, Press to go to the
first linearization point (
PT-> 1
). Place test
weights on the scale and press or
ENTER
.
Use the numeric keypad to enter the actual
test weight value, then press
ENTER
to
calibrate. The indicator displays
*CAL*
while
calibration is in progress. When complete, the
A/D count for the linear calibration is
displayed. Press
ENTER
again to save the
calibration value and go to the next prompt
(
PT-> 2
).
Repeat for up to five linearization points. To
exit the linearization parameters, press to
return to WLIN.
7. The optional rezero function is used to
remove a calibration offset when hooks or
chains are used to hang the test weights.
•
If no other apparatus was used to hang the
test weights during calibration, remove
the test weights and press to return to
the CALIBR menu.
•
If hooks or chains were used during
calibration, remove these and the test
weights from the scale. With all weight
removed, press
ENTER
to rezero the
scale. This function adjusts the zero and
span calibration values. The indicator
displays
*CAL*
while the zero and span
calibrations are adjusted. When complete,
the adjusted A/D count for the zero
calibration is displayed. Press
ENTER
to
save the value, then press to return to
the CALIBR menu.
8. Press until the display reads
CONFIG
, then
press to exit setup mode.
4.2
EDP Command Calibration
To calibrate the indicator using EDP commands, the
indicator EDP port must be connected to a terminal or
personal computer. See Section 2.3.2 on page 6 for
EDP port pin assignments; see Section 5.0 on page 37
for more information about using EDP 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 WZERO EDP command to calibrate
zero. The indicator displays
*CAL*
while
calibration is in progress.
3. Place test weights on the scale and use the
WVAL command to enter the test weight
value in the following format:
WVAL=
nnnnnn
<CR>
4. Send the WSPAN EDP command to calibrate
span. The indicator displays
*CAL*
while
calibration is in progress.
5. Up to five linearization points can be
c a l i b r a t e d b e t w e e n t h e z e r o a n d s p a n
c a l i b r a t i o n va l u e s . U s e t h e f o l l ow i n g
commands to set and calibrate a single
linearization point:
WLIN.V1=
nnnnn
<CR>
WLIN.C1<CR>
The WLIN.V1 command sets the test weight
value (nnnnn) for linearization point 1. The
WLIN.C1 command calibrates the point.
Repeat using the WLIN.Vx and WLIN.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
to hang test weights, then send the REZERO
EDP command. The indicator displays
*CAL*
while the zero and span calibrations are
adjusted.
7. Send the KUPARROW or KEXIT EDP
command to exit setup mode.
