SMA SC 500CP XT - Manual (Page 25)

3.3.3.3 LEDs on the Optical Fiber Terminals
The SC-COM is also available with pre-wired optical fiber connections. If the optical fibers are connected to the splice
box of the inverter, the status of the connection will be indicated by the LEDs of the SC-COM.
Figure 9: LEDs for the status of the optical fiber connection
Position LED Color Status Explanation
A Link / Activity green on Connection (Link) established.
flashing The SC-COM is transmitting or receiving data
(Activity).
off No connection established.
3 Product Overview SMA Solar Technology AG
User Manual 25 SCCPXT-BA-E4-en-54