Revised 1/3/01 • UNI/59
7
© 2001 Automated Logic Corporation
page; refer to the
U5I Module Driver
document
for details.
Setting the flow sensor’s zero point
(T-Line modules)
1. Turn off the Air Handling Unit serving the
VAV box you are calibrating.
2. In SuperVision, view the UNI module
driver Status page (FB#15).
3. On the Flow Calibration table, subtract the
FB's Current Value from the 0.00 Value.
For example, if the Current Value is 128
and the 0.00 Value is 130, the result is 2
(130 - 128 = 2).
4. On the module driver's Parameter page,
enter this result in the Flow Zero Offset
parameter.
5. Check the module driver's Status page
again. If the Adjusted Value on the
Calibration table matches the 0.00 Value,
calibration is complete. If not, repeat steps
3 through 5.
Troubleshooting
If there is a problem and you are not receiving
correct values from the equipment, use the
Diag Port to troubleshoot the problem (see
Figure 2 on page 3).
1. On the module driver Parameter page, in
the Diagnostic Port Setup section, enter
the connection information you will be
using.
2. Connect a DC95 or DC99 cable between
the Diag Port and a computer that is
running a communications program like
HyperTerminal or Terminal. To make your
own cable, use the diagrams in Figure 8.
3. Set up your communications program
with the correct COM port and baud rate
settings to display the diagnostic
information output by the UNI/59. The
diagnostic messages have been written to
help you understand what is happening;
see Figure 9 on page 8.
4. Refer to “Troubleshooting Tips” for
possible solutions. If you are unable to
solve the problem, save the diagnostic
capture to a file and contact Technical
Support at (770) 429-3002.
Understanding the Diagnostic
Capture
Different levels of detail are provided by the
five diagnostic levels. Level 4 contains the
most detail and is shown in the example in
Figure 9 on page 8. The diagnostic level is
determined by the
Diagnostic Port Setup
section on the Parameter page.
Troubleshooting Tips
If you are having trouble communicating with
the UNI/59, check these items before
contacting Technical Support.
• Make sure the serial cable is connected
at both ends. In more complex systems,
make sure that all cables involved are
attached correctly.
• Make sure the UNI/59 and the T-Line or
U-Line modules have power and are
turned on. In more complex systems,
make sure all equipment has power and
is turned on. Some devices, especially
communication devices, receive power
from a source other than a power cable
or adapter (for example, some devices
receive power through communication
Figure 8. Diag Port wiring diagrams
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