When sending data to the CDU, it must be sent in block
form, followed by (with an appended) CR (carriage re-
turn) and LF (line feed). Normal communications pro-
grams, like Windows XP Hyper Terminal are sufficient to
get the job done.
Using Windows XP Hyper Terminal, do the following (from
the Program Manager):
Using an RS-422 to RS-232 convertor, connect the 1
CDU’s port 1 or 2 to the PC’s communications port
(Refer to the page 195 - MX500 PC Interface sec-
tion of this manual).
On the CDU press the 2 CFG key until CFG1 screen
is displayed.
Scroll down the menu to 3 WPT & RTE In.
Press the 4 EDIT key.
Set the 5 External WPT Input to Yes.
Set the 6 Data Input Port No. to 1 or 2 (depending
where the external interface is).
Press the 7 EDIT key.
On the computer, select 8 All Programs - Accessories
- Communications, and click on the Hyper Terminal
icon.
Give your 9 Connection Description a name and click
OK.
Under the 10 Connect using option, choose COM1 (or
COM2, depending where the external interface is).
Make the following 11 Port Settings:
4800 baud
8 data bits
1 stop bit
Parity - none
Flow Control - none
OK
Click on the 12 Transfer menu and select Send Text
File.
Make the following settings: 13
[select the correct file name.txt]
[select the correct location (folder) for the file]
Open
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