User`s guide

Operating the DX LCD Display 4-17
3. Press the key to continue when the power on self test is
complete. If you do not press a key, the screen is cleared after a
five second delay. The next screen that appears depends on
whether you have connected the display to a different DX
controller or whether it is still connected to the same controller to
which it was connected the last time it had power. If it is a
different controller, the Home Page for the active configuration
appears. If it is the same controller, the screen that was last
displayed before losing power reappears.
4. If necessary, reset the display at any time during normal operation
by pressing the
esc
key twice in quick succession, similar to double
clicking a computer mouse button. After the reset, the display
shows the diagnostics screen.
Connecting to a DX Controller via the N2 Bus
(Firmware Version 3.x only)
During initialization, the display unit polls a predefined address range
on the N2 Bus and attempts to match the DX controllers’ configuration
codes with each of the eight display configuration codes stored in the
display unit. The display unit will scan the bus until it finds eight
controllers or has fully scanned the predefined address range. If at least
one controller is found, the Choose Controller screen appears.
Choose Controller:
ADDRESS CONFIGURATION NAME
1
2
3
4
5
Boiler Plant
Chiller No. 1
Chiller No. 2
AHU1
AHU2
Choosecontr
Figure 4-8: Choose Controller Screen