Figure 3-6. calibration process, 3 edp command calibration – Rice Lake 120 Plus Digital Weight Indicator User Manual

Page 23

Configuration

is in progress. When complete,

REZERO

is displayed.

6. Optional: The rezero function is used to remove a calibration offset when hooks or chains are used to hang

the test weights.

• If hooks or chains were used during calibration, remove these and all test weights from the scale. Press

the

enter

key to rezero the scale. This function adjusts the zero and span calibration values. When

complete,

CAL

is displayed.

7. Press the

key until the display reads

EXIT Y

, then press

enter

key to exit configuration mode.

When editing numeric values, press the enter key to allow the numeric entry, and then press the clear key to
clear the values. Press numeric keys (0~9) to enter the value. Press the enter key to save the value entered and
return to the level above.

The calibration process is depicted in the following figure:

Figure 3-6. Calibration Process

NOTE 1:

Place test weights.

NOTE 2:

Use arrow keys, see Figure 3-2 on page 13 to set the maximum weight value.

NOTE 3:

Optional - use only when hooks or chains were used during calibration. To recalibrate zero, remove these

and the test weights from the scale.

3.3.3

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 on page 7 for EDP port pin assignments; see “Appendix A Electronic Data
Processing Commands EDP” 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 (the 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

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. Once the calibration

is complete, the OK message appears on the display.

3. Place test weights on the scale and use the

WVAL

command to enter the test weight value in the following

format: WVAL=nnnnnn.

4. Send the

WSPAN

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, and then send the

REZERO

command. The indicator displays

*CAL*

while the zero and span

calibrations are adjusted.

Note

CONFIGURATION

FORMAT

CALIBRATION

Note 3

REZERO

WEIGHT SPAN

WEIGHT VALUE

WEIGHT ZERO

CALIBRATION

Note 2

######

Test Weight Value

Note 1

LATITUDE

ELEVATION

L A T I T D

E L E V T N