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QSL Support - Serial Comm Port RS232/RS422 Pin Outs

IO Port and Interrupt Configuration Switch:

The following table contains the pin description on 9 pin and 25 pin D-type connectors.
Please note it is Data Terminal Equipment (DTE) assignment.
DM9P    DB25P    Usage
1 8 RXD - (RS422/485 Only)
2 3 RXD +
3 2 TXD +
4 20 TXD - (RS422/485 Only)
5 7 GND
6 6 RTS - (RS422/485 Only)
7 4 RTS +
8 5 CTS +
9 22 CTS - (RS422/485 Only)

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