User's Manual
12
13
COM2 RS232 wiring
For a reduced RS232C (no handshake), only TxD, RxD and
ground are connected on J11.
Terminal block J11: Reduced RS232
Pin 5 RxD Input
Pin 6 Not connected
Pin 7 TxD Output
Pin 8 Not connected
Pin 9 Ground Ground
Terminal block J2/J11: Full RS232C (optional)
Pin 1 DTR (Connected to DSR on the host) Output
Pin 2 RTS (Connected to CTS on the host) Output
Pin 3 DSR (Connected to DTR on the host) Input
Pin 4 CTS (Connected to RTS on the host) Input
Pin 5 RxD (Connected to TxD on the host) Input
Pin 6 Not connected
Pin 7 TxD (Connected to RxD on the host) Output
Pin 8 Not connected
Pin 9 Ground Ground
Electrical Interfaces