Filter
Top Products
EUROPE will cause all dates to display DAY/MONTH/YEAR.
The remaining five entries are two digits each;
MONTH __, DAY __, YEAR __, HOUR __, and MIN __.
Use the * key to step through all displays without change.
Enter new settings where required.
The correct date and time have been entered at the factory
and should never have to be reset. Of course you may be in
a different time zone.
*12 Press (*,1,2) to move the PARAMETER table from ROM to RAM.
This allows system to operate with the parameters that were
originally supplied as default numbers with the system.
EXPLANATION:
All PARAMETERS are stored in a table that resides in three
places: ROM, RAM, and EEPROM.
ROM (Read Only Memory) is the chip on the circuit board that
cannot be altered in any way except by physically replacing
the entire chip. It contains the program and the copy of
the parameter table that we supply as standard with all
controllers.
EEPROM (Electrically Erasable Programmable Read Only
Memory) is the portion of the processor that can be altered
by the computer by special request only; data stored here is
not lost even if the battery backed up RAM should loose
power. EEPROM contains all parameters and control numbers
that are unique to your system. It holds the information
that is automatically retrieved when the CLEAR procedure is
performed (see below). This information may be retrieved
for use only by special request from the keypad. At the
factory we have set what we believe to be the proper
parameters for your application into the EEPROM.
RAM (Random Access Memory) is the chip on the circuit board
where the processor keeps track of and stores constantly
changing data. It is the area that would go blank if power
were removed from it. We have provided a battery back-up
for the RAM so this should never be a problem. On normal
power off and power on, the data and parameters that reside
in RAM are not lost. However, RAM is the portion of memory
most easily corrupted by the poor electrical environment of
a factory. Should something cause the data in RAM to be
lost or corrupted, a "CLEAR" procedure is provided that will
retrieve the parameter table stored in the EEPROM and copy
it into RAM memory for use. If you make changes to the
PARAMETER table, these changes reside only in RAM and may be
lost in the event of a computer malfunction. To insure that
your changes are saved for future runs, it is necessary to
move this information from RAM to the EEPROM (*23, next).
NOTE: The battery used for backup is a lithium battery that
is part of an I.C. chip on the board. It has an expected 10
year life and is not easily accessible for replacement.
Page 41