Technical information
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Figure 7-7 Comm X PCB Lights
Link LED Operation and Signaling
• The Link LED remains on if a hardware Ethernet connection is found.
• The LED is off if there is no hardware Ethernet connection.
• There are no ash codes for the Link LED.
Activity LED Operation and Signaling
• The Activity LED (called ACT on some circuit PCBs) ashes to indicate the presence
of internet trafc.
• There are no ash codes for the Activity LED.
Status LED Operation and Signaling
• During the startup sequence the Status LED is on solid for a few seconds, then ashes
quickly for several seconds while the communications device looks for an Internet
connection.
• After a few seconds, the Status LED ashes more slowly while serial communication
is established with the inverter’s main processor.
• Once serial communication is established, the Status LED should remain on unless a
fault occurs.
The Status LED will ash status codes if any problem is found.
• Each code is a comprised of a series of three ashes, followed by a pause.
• Each ash can be either a short or long ash. A short ash is approximately 0.2 sec-
onds and a long ash is approximately 0.5 seconds.
• The pause between ashes is one second.
Link Light
Activity Light
Status Light