SMA SIC 50 - Manual (Page 26)

Electrical Connection SMA Solar Technology AG
26 SIC50-IA-en-11 Installation Guide
Configuring the Software
Use a terminal program in order to display the measured values on the PC. There are various terminal
programs available, e.g., Hyper Terminal. Hyper Terminal is a Microsoft Windows standard program
and is located under „Start\Programs\Accessories\Communication“.
The following table shows the connection settings for the terminal program:
Pin Assignment of the RJ45 Socket on the Charge Controller
Pin Assignment of the PC's Serial Interface
Setting Value
Bits per second 300
Data bits 8
Parity none
Stop bits 1
Flow control none
Pin Function Level Description
1 Short circuit with PIN 2 must be established for activating RS232
2 Short circuit with PIN 1 must be established for activating RS232
3 TXD RS232, +9 V, − 9 V charge controller output
4 GND 0 V reference potential
9 Shield, protective earth
Pin Function Level Description
5 GND 0 V reference potential
2 RXD RS232, +9 V, − 9 V PC input