SMA Sunny Boy Control Light - Manual (Page 21)

Sunny Boy Control Light Chapter 3: Installing of the connectors
SUNBCL-11:NE
- 21 -
SMA Regelsysteme GmbH
The PC is connected via RS232 with a PC data cable (SMA ordering No. 36-5001).
Note that is may be necessary to use a DB9 to DB25 adapter plug. (SMA ordering
No. 35-5010)
Pin Layout
PIN Signal RS232 Description
1 DCD Data Carrier Detect
2 /RXD Receive Data
3 /TXD Transmit Data
4 DTR Data Terminal Ready
5 GND Ground
6 DSR Data Set Ready
7 /RTS Ready To Send
8 /CTS Clear ToSend
Fig. 3.3: Connecting Configuration Device PC (COM2)
Pin Layout of a DSUB9<>DSUB9 cable
DSUB9 socket DSUB9 socket
Signal PIN PIN Signal
/RXD 2 <> 3 /TXD
/TXD 3 <> 2 /RXD
GND 5 <> 5 GND
| 1 DCD
| 6 DSR
RTS 7 <> 8 CTS
DCD 1 |
DSR 6 |
CTS 8 <> 7 RTS
Fig. 3.4: PIN designation of a PC data cable DSUB9<>DSUB9