ADLINK cPCI-3615 - Manual (Page 56)

42 Board Interfaces
COM1 Mode Selection Switches (SW1~SW4)
These switches select COM1 (cPCI-3615D/P front panel) to be
RS-232 full modem, RS-422, RS-485, or RS-485+ half-duplex
mode. Switches SW1~SW4 are located on the top edge of the
DB-3610L2 board. RS-232 full modem is set by default.
Table 4-20: COM1 Mode Selection Switch Settings
Mode Pin SW1 SW2 SW3 SW4
RS-232
1 ON ON ON OFF
2 OFF OFF OFF OFF
3 OFF ON ON OFF
4 OFF OFF OFF OFF
RS-422
1 OFF OFF OFF ON
2 ON ON ON OFF
3 OFF OFF OFF ON
4 OFF ON ON OFF
RS-485
1 OFF OFF OFF ON
2 OFF ON ON OFF
3 ON OFF OFF ON
4 OFF ON ON OFF
RS-485+
1 OFF OFF OFF OFF
2 OFF ON ON ON
3 ON OFF OFF OFF
4 OFF ON ON ON
SW1 SW2 SW3 SW4