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420 Plus Installation Manual - Appendix
51
7.9
Test Mode
In addition to normal and setup modes, test mode
provides a number of diagnostic functions for the
420
Plus
, including:
•
Display raw A/D count
•
Reset configuration parameters to default
values
•
A/D internal calibration
Test Mode is intended for factory use only.
To enter test mode, press and hold the setup switch
until the front panel display shows the word
TEST
.
After about three seconds, the test mode display
automatically shifts to the first test menu function, A/
DTST.
Figure 7-6 shows the Test Menu structure; Figure 7-7
shows the front panel key functions in test mode. Note
that, because the Test Menu functions are all on a
single menu level, the
GROSS/NET
( ) key has no
function. Press the
ZERO
( ) key to exit test mode.
Table 7-7 summarizes the test menu functions.
Figure 7-6. Test Mode Menu
Figure 7-7. Front Panel Key Functions in Test Mode
Table 7-7. Test Mode Menu Functions
Note
A/DTST
TEST
ADOFFS
ADGAIN
DEFLT
EXIT
Not used
ENTER
Move LEFT
Move RIGHT
TEST Menu
Function
Description
A/DTST
Display A/D test
Press and hold Enter key to display raw count from A/D converter.
DEFLT
Default parameters
Press setup switch and Enter key at the same time to reset configuration and calibration parameters to factory
default values. Load cells must be recalibrated before using the indicator (see Section 4.0 on page 30).