IM 613 / Page 14 (Rev. 7/99)
• Slave units will communicate as expected when your PC is
connected to Port-A, simply make sure you use the correct
address for each Slave when using the Monitor program.
For example, if the Slave HEX switches are set at 01, then
the address you will use in the Monitor program will be 01.01;
if the HEX switches are set to 02 on the Slave UVC, then
you use 01.02 as the address, etc.
• If you need to communicate with a UVC that is already con-
figured as a Master and is part of an operating Master/Slave
network, then use the following method. For example, to
calibrate actuators on a Master UVC, connect to Port-A on
a Slave unit and set the Controller Address box on the
Monitor Read/Write screen to 01.00. This will gain access
to the Master controller so that actuator calibration may be
performed.
• When a slave UVC loses communication to the Master UVC,
the Slave UVC will operate based upon its potentiometer
settings (i.e. % Minimum OA Position, etc.) located on the
faceplate of the Slave UVC.
Initial Master Configuration
1. Connect the Master UVC’s Port-A to your PC using the
proper cables.
2. Adjust the Master UVC’s Hex switches to FF and cycle unit
power (auto calibration will occur).
3. Using the Windows Monitor software establish communi-
cations with the controller using address 00.FF.
4. In the Windows Monitor program, secure the correct Master/
Slave software, then go to the Support menu and choose
Read/Write.
5. On the Read/Write screen, in the Operation box select the
Monitor radio button by clicking on it. In the Display box
select the Decimal radio button by clicking on it.
6. Enter the following string of memory addresses into the
Memory Address box exactly as shown then press the
Enter key: 8011-8012,8001-8002,0911,0204.
7. Write a value of 73 to location 8011 by clicking on the
current value.
8. Write a value equal to the number of slaves you will have
into location 8012 by clicking on the current value of 8012.
This value must be 1 through 5 as the minimum number of
slaves is 1 and the maximum is 5.
9. Write a value of 0 to location 0911 by clicking on the cur-
rent value.
10. Write a value of 4 to location 0204 to reset the controller.
11. Change location 8001 to equal location 8002 if there is a
difference. If no difference, go to the next step.
12. Change the Master UVC Hex switches to 01.
13. Write a value of 4 to location 0204 to again reset the
controller.
14. Master configuration is complete.
15. At this point you will lose communications with the Master
UVC through Port-A on the Master. If you need to commu-
nicate with the Master UVC, the recommended method is
to connect to one of the Slave UVC’s Port-A and set the
network address within the Monitor program to 01.00.
Initial Slave Configuration
1. Connect all Slave UVC Port-B’s to the Master UVC’s Port-
B as shown on the drawings provided with the unit
ventilator (these drawings are typically mounted on the
inside of one of the unit ventilators removable panels).
2. Connect the Slave UVC’s Port-A to the PC using the proper
cables.
3. Using the Windows Monitor software, establish communi-
cations with the controller using network addresses 00.FF.
4. In the Windows Monitor program, secure the correct
Master/Slave sotware, then go to the Support menu and
choose Read/Write.
5. On the Read/Write screen, in the Operation box select the
Monitor radio button by clicking on it. In the Display box,
select the Decimal radio button by clicking on it.
6. Enter the following string of memory addresses into the
Memory Address box exactly as shown, then press the
Enter Key: 8011-8012,8001-8002,0911,0204.
7. Write a value of 33 to location 8011 by clicking on the
current value.
8. Write a value of 0 to location 8012 by clicking on the
current value.
9. Write a value of 1 to location 0911 by clicking on the
current value.
10. Write a value of 4 to location 0204 to reset the controller.
11. Change location 8001 to equal 8002 if there is a difference.
If no difference, go to the next step.
12. Change the Slave UVC Hex switches to 01 for Slave-1, 02-
for Slave-2, 03 for Slave-3, etc.
13. Write a value of 4 to location 0204 to again reset the
controller.
14. Slave configuration is complete, repeat this process for each
Slave.
To Check an Existing Master UVC
1. Verify that the main power switch is at “Off.”
2. Set the network address.
For a master UVC, it is recommended that this hex switch
setting be “01”. (This is a “level 2” network address.) For
further information, refer to “Hex Switches” in the
“Component Data” section of this manual.
3. Apply power to the unit.
Turn the main power switch to “On” and the motor speed
switch to desired speed.
4. Check the status LED and operating mode changeover
devices.
The status LED should illuminate after calibration. If a wall
sensor package is used, the remote status LED should also
illuminate.
Referring to Table 1, verify that the day-night changeover
and tenant override options (if present) are working
properly. Do this by switching these devices and observing
the status LED.
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