Rice Lake 120 Digital Weight Indicator - Manual (Page 26)

22 120 Installation Manual
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 2.2.1 on page 5 for
EDP port pin assignments; see Section 5.0 on page 23
for more information about using EDP commands.
Once the indicator is connected to the sending device,
do the following:
1. Place the indicator in configuration 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.
Note
During EDP command calibration, the *CAL*
message remains on the display. The OK
response is returned when calibration is
complete.
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. 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.
6. Send the KUPARROW EDP command to exit
configuration mode.