Rockwell Automation 2711-KA1_KC1_TA1_TA4_TC1_TC4 PanelView Terminals for DOS/Windows - Manual (Page 33)

PanelView 1200 Terminal Functions
Chapter 2
2-4
Important If the optional user EPROM or EEPROM is corrupted or not
installed, the terminal will display this fault message each time it is
powered up:
20200
Clear
You can safely clear this message and continue. You can also disable this
message altogether, through the Configuration Mode Menu item
User
EPROM/EEPROM Power-up Test , explained later in this chapter.
In the case of a corrupted application file, download the file again. If the
problem persists, your PanelView 1200 terminal requires servicing; contact
your Allen-Bradley representative.
Battery Failure Test
The battery should last the life of the PanelView 1200 terminal. However,
the battery is constantly monitored when the PanelView 1200 terminal is in
Run mode because the battery-backed RAM is so important to PanelView
1200 terminal operation.
If the battery should fail, a Minor Fault message will appear to inform the
operator. As long as the terminal’s power is not turned off, there is no
problem. If power is lost and restored to the terminal, the results depend on
whether there is a user PROM installed.
The following table lists the results of terminal power loss after battery
failure.
If the battery fails and terminal power
is lost:
This happens: Fault level: What to do when terminal power is
returned:
And no user PROM is installed The application file in batteryĆbacked
RAM is lost.
MAJOR FAULT: For temporary use of the terminal,
download the file again and do not cycle
power. Call your AĆB representative to
replace the board.
And the user EPROM/EEPROM contains
a backĆup application file
The application file will be reloaded into
RAM from the user EPROM/EEPROM,
but any retained values will be lost.
MINOR FAULT: Press CLEAR to clear the message and
proceed. Call your AĆB representative to
replace the board the battery is on.