SMA SC 200 Installation - Manual (Page 69)

SMA Solar Technology AG External Connections
Installation Guide SC20_25_35-IEN094521 69
6.9.2 RS485 data line for communication with Sunny String-
Monitors
Communication between the Sunny Central Control and the optional Sunny String-Monitors (DC
distributor with integrated string current monitoring) is implemented via an RS485 data line, using the
COM1 port of the Sunny Central Control. The RS485 data line of the string current monitoring of the
Sunny Central String monitor is connected to the HUB assembly in the Sunny Central.
The hub is located in the AC cabinet. The following diagram shows the position of the hub in the
Sunny Central 250HE.