User manual

POC-S195 User Manual 54
The IRQ and the address ranges for COM1, 2 are fixed.
However, if you wish to disable the port or change these parameters later you can do
this in the system BIOS setup. The table overleaf shows the default settings for the
panel PC's serial ports. COM1 and COM2 are one set. You can exchange the
address range and interrupt IRQ of COM1 for the address range and interrupt IRQ of
COM2. After exchanging, COM1's address range is 2F8 ~ 2FF and its request IRQ is
IRQ3: and COM2's address range is 3F8 ~ 3FF and its interrupt IRQ is IRQ4. Their
selectable function is the same as the COM1/COM2 set.
B.2.2 COM1/COM2 9-Pin Output Type Setting (JP9/JP10)
Figure B.4: COM port 9-Pin configuration
Pin1,2
Pin9,11
Pn10,12
Pin15,17
Pin16,18
Closed COM2 is RS485 port
Table B.3: Serial Port Default Settings
Port No. IO Address Range Interrupt Request
COM1 3F8~3FF IRQ4
COM2 2F8~2FF IRQ3
Table B.2: COM1 Port Configuration (JP11)
Table B.4: COM Port 9-Pin9 Output Config (JP9/JP10)
Pin No. Open/Closed Function Description
Pin3,4 Closed COM1/COM2 port Pin9 Ring (Default)
Pin1,3 Closed COM1/COM2 port Pin9 output +5V