Frick QUANTUM LX Control Panel, Service Manual

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QUANTUM ™ LX EVAPORATOR CONTROL PANEL
COMMUNICATIONS SETUP
090.610-CS (MAY 2016)
Page 48
• Access the Communications screen and verify that
the Quantum™ ID is set to the same value that you
are trying to access. Also, check that the baud rate
matches that of the setup in the properties section
of the Hyperterminal example.
• Verify the position of the jumpers by comparing
them with the section entitled Quantum™ Com-
munications Jumpers.
• Ensure that the data that you have entered in Hy-
perterminal, exactly matches the example.
• Go back through the Setting up Hyperterminal
section, and ensure that it has been followed ex-
actly. Repeat the process if necessary.
• If you are using a converter card (to convert the
RS-232 signal from the computer to RS-422 or RS-
485), then either verify that the converter card is
working properly with a different piece of known
functioning equipment, or eliminate it completely
by tying into the Quantum™ directly through RS-
232 (Quantum™ 4 only).
• The Communications port on the computer is bad.
Try to verify this by communicating to a different
piece of known good equipment.
• The Communications port on the Quantum™ is
bad.
General Notes
Ensure that the Quantum™ communications param-
eters are correct. This setup can be found on the
Com-
munications screen. This info must match that of the
device that you are trying to talk to at the other end.
There are two red LED’s associated with the Comm
port on the Quantum™ (TX & RX). Ensure that neither
of these LED’s are on continuously. If one or the other
(or both) are on constantly, disconnect the Com cable.
If the status of the LED’s does not change, check the
wiring connections to the comm port. Ensure that the
wiring is not backwards. If the wiring is correct, power
the Quantum™ down, then back up. If either or both of
the LED’s is still on, a bad driver chip may be suspected
on the Quantum™, and the board should be replaced.
Once everything has been inspected (cables, jump-
ers, and setup), try to develop communications from
the master. You should see the LED’s on the Comm
port flickering as the Quantum™ talks to the master. If
nothing happens, it would be best to consult the Hy-
perTerminal section of this manual for more detailed
troubleshooting.
If no data appears, or if the data does not match the
specific protocol requirements that you are using, then
check the following:
• Verify that the communications wiring match-
es that shown in the drawings at the end of
this manual.