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Page 89
Chapter 4: E2 Controller
8. Enter the field “Ok?No,” choose ”Yes“ using the up-arrow and down-arrow keys and confirm by pressing Enter to
save the data and exit the group setup procedure.
9. Referring to the wiring diagram provided with your A/C units, interconnect the units together with the pLAN cable(s) provided.
4.6.2.4 Fault Messages
If the terminal detects the status of the I/O board it is associated with is off-line, the display shows the message: “I/O Board xx
fault.” If this appears, check the Signal LEDs on the control I/O module (Figure 4-2) for an error signal. See Section 4.8 for
guidelines on analyzing the signal LEDs.
On the other hand, if the terminal receives no signal from the network, the display shows the following message: “NO LINK.” If
this appears, check the pLAN cables and ensure they are connected properly.
4.6.2.5 Displaying the Network Status and Firmware Version
Once each A/C unit is configured with its new controller and terminal pLAN address, you can examine the entire network setup.
Press the group setup keys up-arrow , down-arrow , and Enter together as done to access the Address Configuration
screen, but continue holding after the Address Configuration screen appears for at least 5 seconds until the “Network Status”
screen appears.
The Network Status screen, shown below, provides overview of the pLAN group indicating which and how many devices are
connected and the corresponding pLAN addresses.
Figure 4-72. Network Status screen.
Key:
: Controllers (I/O Boards) active in network
: Terminals active in network
: No device connected
The example shown represents:
Controllers active in network, addresses: 1, 2, 3
Terminals active in network, addresses: 30, 31, 32.
The terminal for Controller 1 is always addressed 32; the terminal for Controller 2 is always addressed 31, and so on such that the
sum of the controller address number and the terminal address number always equals 33. Therefore, when viewing controller
number 1, its terminal address will be 32. When viewing Controller 2, its terminal address will be 31, and so on.
Press an up-arrow or down-arrow key to display the next screen showing the version of the firmware residing in the
terminal.