B&G HS2000 - Manual (Page 77)

HS 2000 User Manual
Part 6 -Diagnostic Data
HB-0846-03
6-4
If the key operation is not detected after a short interval then the
message TIME OUT is displayed.
6.1.3 Display
The Scroll Up Key can be used to step the display through a
sequence that switches ON single segments in all characters,
blanks the display and switches ON all segments. When all
segments are switched ON, 16 characters are displayed at the top
and bottom of the display. For the remainder of the test and in
normal operation only 10 characters are used since the unused
segments are connected together. To stop the display test press
the Enter Key.
6.1.4 Network
This option tests part of the FFD’s circuitry for communicating on
the network. At the end of the test the display will show either
PASS or, when failed, a value.
6.1.5 RAM
This option tests for correct operation of the FFD's internal
Random Access Memory (RAM). RAM PASS OK is displayed to
indicate satisfactory completion of the test. If the test fails, RAM
FAIL is displayed and correct operation of the unit cannot be
guaranteed.
6.1.6 PROM
This option tests for correct operation of the FFD's program
memory, and calculates a checksum by adding the individual bytes
of memory together. The total is displayed in hexadecimal code in
the bottom half of the display, with the two least significant digits
indicating the software version number. If this test fails then
FATAL ER 02 is displayed. The upper half of the display shows
the FFD's network node number.
6.1.7 EPROM
This option tests the correct operation of the FFD’s non-volatile
memory where the display settings are stored when power is
switched off. If this fails FATAL ER 03 or FATAL ER 04 will be
displayed. The display page configuration and possibly the text for
some functions will be lost.