42
BAS-SVU025A-EN
LEDs and the 7-Segment Display
Interpreting the LEDs
Table 1
identifies the LEDs and interprets their activity.
Table 1.
LED identification and interpretation
LED type
LED activity
Indicates...
Status
On steady (green)
Power reception
Flashing (red), and an “F” appears on the
7-segment display followed by a code
Fatal error. Service required.
Flashing (red), and an “H” appears on the
7-segment display followed by a code
Hardware failure. SC will probably need to be replaced.
Link 1 communication
L1 TX flickers (green)
Data transmission
L1 RX flickers (yellow)
Data reception
Link 2 communication
L2 TX flickers (green)
Data transmission
L2 RX flickers (yellow)
Data reception
LonTalk communication
Lon TX flickers (green)
Data transmission
Lon RX flickers (yellow)
Data reception
LonTalk service
On steady (red)
LonTalk service pin has been pressed:
• Short press–broadcast neuron ID and program ID
identifies itself so Rover can assign it a DSN.
• Long press (more than 15 sec.)–Forces the SC LON node
to an unconfigured state and disables LonTalk until
reconfigured with Rover.
|O|O| [EIA-232 serial connection]
IOIOI TX (green)
Data transmission
IOIOIO RX (yellow)
Data reception
IMC
IMC TX (green)
Data transmission
IMC RX (yellow)
Data reception
Ethernet 1, Ethernet 2
LINK on steady (green)
Valid Ethernet connection
ACT flickers (yellow)
Data transmission and reception