Communication Interfaces
There are four connections on the UC800 that support
the communication interfaces listed. Refer to
for the locations of each of these ports.
•
BACnet MS/TP
•
Modbus Slave
•
LonTalk® using LCI-C (from the IPC3 bus)
•
Comm 4 using TCI (from the IPC3 bus)
Rotary Switches
There are three rotary switches on the front of the UC800
controller. Use these switches to define a three-digit ad-
dress when the UC800 is installed in a BACnet or Mod-
bus system (e.g., 107, 127, etc.). Valid addresses are 001
to 127 for BACnet and 001 to 247 for Modbus.
LED Description and Operation
There are 10 LEDs on the front of the UC800.
shows the locations of each LED and
describes their behavior in specific instances.
Figure 18. LED locations
LINK
IMC
LINK
MBUS
TX
RX
ACT
SERVICE
Marquee LED
Table 8. LED behavior
LED
UC800 Status
Marquee
LED
Powered.
If the Marquee LED is green solid, the
UC800 is powered and no problems exist.
Low power or malfunction.
If the Marquee LED
is red solid, the UC800 is powered, but there are
problems present.
Alarm.
The Marquee LED blinks Red when an alarm
exists.
LINK,
MBUS,
IMC
The
TX
LED blinks green at the data transfer rate
when the UC800 transfers data to other devices on
the link.
The
Rx
LED blinks yellow at the data transfer rate
when the UC800 receives data from other devices
on the link.
Ethernet
Link
The
LINK
LED is solid green if the Ethernet link is
connected and communicating. The
ACT
LED blinks
yellow at the data transfer rate when data flow is
active on the link.
Service
The Service LED is solid green when pressed. For
qualified service technicians only. Do not use.
D
NOTICE
Electrical Noise!
Maintain at least 6 inches between low-voltage (<30V)
and high voltage circuits. Failure to do so could result
in electrical noise that could distort the signals car-
ried by the low-voltage wiring, including IPC.
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RELEASED 10/Mar/2020 06:59:20 GMT
