User's Manual

SECTION III OPERATION
SM 7063 07/97 3-9
3.8 OPERATION of CDU FUNCTION MENU ITEMS
This section provides a detailed description on the use each of the CDU’s Function Menu Items. Use
the
MENU UP
or
MENU DOWN
key to select the desired Function Menu Item, as required.
3.8.1 Viewing and Changing the ID Code
Many trains can exist in close proximity to one another, therefore each CDU/End Unit pair must have a
way to identify messages that are coming from its "mated" unit. Sharing a unique ID code is how this
is done. The End Unit is assigned a unique ID code during manufacturing which is stored in its
parameter storage EEPROM. The CDU must be programmed with an ID code that matches that of the
End Unit.
1. The
ID Code Display
shows the current ID code as follows:
" ID = ##### "
where ##### is the 5-digit ID code currently stored in the CDU’s non-volatile (EEPROM) memory.
2. To change the ID code, press the
MENU UP
or
MENU DOWN
key until the
Function Menu
Display
reads:
" Change ID: ##### "
The ID code is changed by using the " " or " " keys to select the digit(s) to be modified. The
current active digit flashes. Use the
" "
or
" "
keys to increment or decrement the selected
active digit.
3. Once the desired ID code has been selected, press the
SET
key to store the new ID code. After
pressing the
SET
key, the CDU will display:
" Saving ... "
followed by
" New ID: ##### "
3.8.1.1 Operation if “Allow Changing Between One and Two Way ID Menu” is Enabled
If the Configuration Item entitled
“Allow Changing Between One and Two Way ID Menu”
is
enabled, the CDU will prompt the user to switch from One or Two Way operation as follows:
1. Depending on the current operational mode (One-Way or Two-Way), the CDU will prompt the user
in one of the following ways:
a) If the CDU is currently operating in
Two-Way mode
, the user is prompted as follows:
" Saving ... "
followed by
“ Press SET to change to One-Way “
followed by
" New ID: ##### "
The
“ Press SET to change to One-Way “
message is displayed for 5 seconds.
If the
SET
key is NOT pressed during the 5 second window, the CDU will continue to operate in
Two-Way mode and the sonalert will beep once to signal the successful completion of the save
of the new ID into the CDU’s parameter storage EEPROM.