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Terminal and COM Port Problems
Symptom
Screen continuously
puts out garbage
characters.
Nothing is displayed
on the terminal
emulator screen.
Screen is updated, but
will not respond to
keystrokes.
Reason
The likely cause of this
problem is a baud rate
mismatch between the
terminal emulator and the
enclosure. The baud rate can
be set from 9,600 to 115,200.
The probable cause of this
problem could be an
incorrect baud rate setting, a
bad RS-232 cable connection
or an incorrect cable type.
Improper setting.
Chapter 5 - Troubleshooting
Solution
1 Shut down the controller.
Refer to the software user's
guide.
2 Power down the enclosure.
3 For Hyper-Terminal:
a. Select the File menu and
choose Properties.
b. Click the Configure button.
c. Choose 9600 and click OK.
If the cable is properly connected,
ensure that the cable is a null modem
type.
Disable hardware flow control on the
terminal or terminal emulator.
Terminal and COM Port Problems
129
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