SMA Sunny Data Control V.5.0 - Manual (Page 19)

Connecting the PC to a Communication Device SMA Technologie AG
Technical Description SDC-TEN081450 21
5. 2 Sunny Boy Control / Plus
5.2. 1 Connection via RS232
RS232 communication characteristics:
• A maximum of one Sunny Boy Control / Plus can be connected to a PC.
• The PC must be equipped with an RS232 port. If it is not, please read section 5. 1 "Notes on
the Use of Level Converters" (Page 20).
• The Sunny Boy Control / Plus requires an RS232 Piggy-Back at the PC (COM 2) port.
Alternatively, at the Sunny Boy Control Plus, the AUX (COM 3) port can be used, if this is
equipped with an RS232 Piggy-Back.
• The maximum total cable length is 12 m.
Cabling Recommendations
The connection between the Sunny Boy Control and the PC occurs by means of a commercially
available null modem cable. Use the null modem cable provided.
If the length proves insufficient, use a commercially available null modem cable of the required
length.
Jumper Functions at the Sunny Boy Control / Plus
With RS232 communication, no jumper must be mounted on the Sunny Boy Control / Plus at the PC
(COM 2) port, or on the Sunny Boy Control Plus at the AUX (COM 3) port.
RS232