Operation Manual

SMA Technologie AG Connecting the PC to a Communication Device
User Manual SDC-TEN080642 Page 23
Wiring Diagram
1. Use the provided null modem ca-
ble, or a commercially available
null modem cable of the required
length.
2. Plug the 9-pin D-Sub female con-
nector into a free COM port on
your PC.
3. Lay the cable properly so that
there is no risk of persons tripping
over it.
4. Plug the 9-pin D-Sub female con-
nector into the port on the Sunny
Boy Control which is equipped
with the RS232 interface.
Sunny Boy Control: PC (COM 2)
Sunny Boy Control Plus: (COM 2)
or AUX (COM 3)
5. Make sure that jumpers A, B and
C are not plugged in the port
used.
Observe all safety instructions in the Sunny Boy Control / Plus
documentation, and in the PC documentation.
Shut down the PC before you connect the Sunny Boy Control / Plus, as
otherwise one or both COM ports may be damaged.
Sunny Boy Control Sunny Boy Control Plus