LI-COR LI7200RS, Instruction Manual

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Section 6. Troubleshooting
Instrument network settings incompatible with computer or local area network set-
tings? If the instrument IP address is set to
Static
, you probably will not be able to
connect to the instrument over a network unless you change the instrument IP
address to
Dynamic
(Obtain IP address automatically). Alternatively, connect to the
instrument using the RS-232 serial connection.
RS-232 serial connection problems
When connecting with RS-232 serial, the
Connect
button in the PC software causes
the program to set a break condition on the communication line, signaling the
instrument to change to 9600 baud and send its current configuration. The PC
then sends the desired configuration (update rate, baud rate, etc.) back to the instru-
ment. Both instruments then change to the desired baud rate, and operations begin.
When the
Disconnect
button is clicked, the PC signals to the instrument to change
its RS-232 configuration back to what it was originally (or to that set up in the RS-
232 panel).
"Port in use or does not exist"
Correct COM port selected? This message indicates that the COM port setting on
the
Connect
page is either incorrect, or else that COM port is already in use by
some other program. If you are sure that the COM port is correct, and there is noth-
ing else running, try rebooting the instrument.
"Not able to connect successfully"
Click
Connect
again. Sometimes it takes a couple of attempts. If repeated attempts
fail, then make sure the correct COM port is selected. Make sure the instrument is
powered and running and see if the LED lights for about 5 seconds.
“Parse Error”
Incompatible PC and instrument software? Install new PC and instrument soft-
ware.
Baud rate and update rate incompatible? In the
Connect
window, the Baud Rate
menu is used to set the baud rate at which to communicate with the instrument.
The rate of data transfer is also dependent upon the maximum rate available with
your computer's serial port, and the update frequency to be used while the program
communicates with the instrument.
6-4 LI-7200RS Enclosed CO₂/H₂O Analyzer