Manual

Board Interfaces 43
cPCI-3615
COM2 Mode Selection Switches on RTM (SW1~SW4)
These switches on the RTM select COM2 to be RS-232 full
modem, RS-422, RS-485, or RS-485+ half-duplex mode.
RS-232 full modem is set by default. See “cPCI-R3610T RTM
Board Layout” on page 25 for switch locations.
Table 4-21: COM2 Mode Selection Switch Settings
Mode Pin SW1 SW2 SW3 SW4
RS-232
1 OFF ON ON ON
2OFFOFFOFFOFF
3 OFF ON ON OFF
4OFFOFFOFFOFF
RS-422
1ONOFFOFFOFF
2 OFF ON ON ON
3ONOFFOFFOFF
4 OFF ON ON OFF
RS-485
1ONOFFOFFOFF
2 OFF ON ON OFF
3ONOFFOFFON
4 OFF ON ON OFF
RS-485+
1OFFOFFOFFOFF
2ON ON ONOFF
3 OFF OFF OFF ON
4ON ON ONOFF
SW1 SW2 SW3 SW4