There are several LEDs on the front panel of an AS-P server.
The AS-P server comes in different models. The AS-P and AS-P-S models have nine LEDs whereas the AS-P-NL and AS-P-NLS models have seven LEDs.
Function |
Color |
RS-485 A, Tx |
Yellow |
RS-485 A, Rx |
Green |
RS-485 B, Tx |
Yellow |
RS-485 B, Rx |
Green |
Ethernet 1, Link/Act/Speed |
Green/Yellow |
Ethernet 2, Link/Act/Speed |
Green/Yellow |
LON, Tx a |
Yellow |
LON, Mode a |
Red |
Status (AS-P server) |
Green/Red |
The AS-P server Ethernet and Status indicators comprise two LEDs (green/yellow and green/red respectively) in one structure. Normally, when one LED is lit, the other is not lit and vice versa, that is, the indicator will show one color at a time.
The LEDs indicate status of the AS-P server and the ongoing communication.
The automation server Status LED indicates the condition of the device.
LED Patterns |
Condition |
Green, constant |
Normal operation, status OK |
Green, flashing (~1 Hz) |
Device restarting, wait |
Green, flashing (~10 Hz) |
Device shutting down |
Red, constant |
Detected error, attention required |
Red, flashing (~1 Hz) |
Device operates, but a problem needs attention |
Red/green, flashing (~1 Hz) |
Device firmware upgrade (DFU) mode or firmware being downloaded in DFU mode |
No light |
No input power |
The RS-485 (COM A and COM B) LEDs indicate the condition of the RS-485 communication.
LED Patterns |
Condition |
Yellow, flashing (Tx) |
Transmit data |
Green, flashing (Rx) |
Receive data |
The Ethernet (1 and 2) LEDs indicate the condition of the Ethernet communication.
LED Patterns |
Condition |
Green, flashing |
10 Mbit communication |
Yellow, flashing |
100 Mbit communication |
The LON LEDs indicate the condition of the LonWorks RS-485 communication.
LED Patterns |
Condition |
Yellow, flashing (Tx) |
LON communication RS-485 |
Red, short flash (Mode) |
During start-up; otherwise for future use |
The AS-P server models AS-P-NL and AS-P-NLS do not have LonWorks (LON) LEDs.