14 ACC-SVP01B-EN • BCI-I Integration Guide
BCI IntelliPak Rotary Switches and LEDs
Link and IMC
TX blinks green
Blinks at the data transfer rate when the
unit transfers data to other devices on
the link
TX LED: Regardless of connectivity or
not, this LED will constantly blink as it
continually looks for devices to
communicate to.
LED not lit:
Determine if, for example, a Tracer SC or
BACnet device is trying to talk to the
controller or if it is capable of talking to
the controller. Also determine if the
communication status shows down all of
the time.
Refer to “Ground Measurements,” p. 16
for a check-out procedure.
RX blinks yellow
Blinks at the data transfer rate when the
unit receives data from other devices on
the link
• ON solid yellow; indicates there is
reverse polarity
LED not lit
Indicates that the controller is not
detecting communication
• Not lit; cycle the power to reestablish
communication
Service
Shows solid green
Indicates someone is pressing this LED
or the controller is not operating
normally
Press and hold during power up to place
controller into boot code or press and
hold for a count of approximately 10
seconds to clear the Device ID.
What is Boot Code? When the UC400
is placed into boot code, the system
will not run any applications such as
trending, scheduling, and TGP2
runtime.
Blinks green
Indicates controllers is not accessing
application software
• Restore; using TU service tool
LED not lit
Indicates controller is operating normally
Binary 01 to Binary 09 Not Used
Table 1. LED Activities and Troubleshooting Tips
LED Name Activities
Indication or Troubleshooting
Tip (Denoted in Bullets)
Notes
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