Appendix A Pin Assignments
3 3
Table A-1: UNO-2050 connectors and jumpers
CN2
Internal IDE connector
CN3
Phoenix power connector
CN4
Internal CompactFlash card slot
CN5
LCD input from SOM-2353 CN1
CN7
LCD connector (reserved)
COM1
COM1 standard RS-232 serial port
COM2
COM2 standard RS-232 serial port
CON1
COM3 and COM4. Isolated 5-wire RS-232/422/485
serial connector
CON2
Isolated digital output connector
D5
Power IDE LED
D6
Power LED
D19
Diagnostic LED
J1
Reset button
JP1
System grounding mode
JP2
CompactFlash IDE Primary Master/Slave jumper
JP4
COM3 5-wire RS-232/422/485 selection
JP5
COM4 5-wire RS-232/422/485 selection
JP7
RS-422/485 terminal resistor setting
JP10
Isolated digital input connector
JP12
Digital output power on configuration
KM1
PS/2 keyboard and mouse connector
LAN1
Ethernet RJ-45 connector
LAN2
Ethernet RJ-45 connector
SW1
RS-485 auto flow control mode and RS-422
master/slave mode selection
VGA1
VGA DB-15 connector