CHAPTER 5
SWITCH AND JUMPER SETTING

The Plug and Play features let hardware configuration for IRQ and I/O address is detected by BIOS automatically, so that it need not switch and jumper setting. The on board switch can be used to identify card number by the users (if you do not set the switch, the PnP BIOS will assign card number automatically). 

JP1,JP2 (Jumper 1,2)     Select high speed mode or normal speed mode.

JP3 (Jumper 3)      Set RS422 or RS485 for second port.

SW1 (Switch 1)       Identifies card number.

Under the RS485 mode, all the RS485 Ports are set to receive mode automatically, while one port use to send data to the other port, it needs to set RTS signal to 1, to enter driver mode, then send message or data. After sending message, it needs to set signal to 0 to enter receive mode again.


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1. Select High Speed or Normal Speed Mode

    

The JP1 is used to select high-speed mode or normal speed mode of RS232 port, and JP2 is used to select high-speed mode or normal speed mode of second port (RS422 or RS485); to select normal speed, please short pin 1 and 2, to select high speed, please short pin 2 and 3. The clock rate is 1.8432MHZ for normal speed mode. The baud rate speed up to 115200. The clock rate is 7.3728MHZ for high-speed mode. The baud rate speed up to 460K.
Pin
 Mode
Short 1,2
 Normal Speed
Short 2,3
 High Speed

For normal speed mode, the user setting baud rate is the same as RS232 baud rate. We list in the following.

Original
 RS232 on board baud rate
50
50
300
 300
600
 600
1200
 1200
2400
 2400
4800
 4800
9600
 9600
19.2K
 19.2K
38.4K
 38.4K
57.6K
 57.6K
115.2K
 115.2K

For high-speed mode, the user setting baud rate maps to on board RS232 baud rate are list in the following. Please note that, you device driver may report original baud rate, however the speed of communication line is quadruple speed.

Original
RS232 on board baud rate
50
200
300
1200
600
2400
1200
4800
2400
9600
4800
19.2K
9600
38.4K
19.2K
76.8K
38.4K
153.6K
57.6K
230.4K
115.2K
460.8K

2. Set RS422 or RS485 Mode for Second Port

    

The JP3 is used to set RS422 or RS485 mode for second port, to short pin 1 and pin 2 means set RS422 mode, to short pin 2 and pin 3 means set RS485 mode.

Pin
 Mode
Short 1,2
 RS422
Short 2,3
 RS485

3. Card Identifier

     

The switch is used to identify card number, default setting is card 15 , and there are two methods to set the card number:

•  PnP mode

Just plug in PCI BUS 4 CHANNELS RELAY OUTPUT / 4 CHANNES PHOTO ISOLATOR INPUT ADAPTER into PCI slot, the PCI BIOS will allocate I/O address to each adapter automatically and assign card number start from 0 to each adapter. You may set any card number at PnP mode, and you need use software tools to distinguish port id. Almost all of the operating systems run at PnP mode.

•  manual mode

Set card number by card identifier switch, the PCI BIOS will assign pre-allocated I/O address to each adapter. Please set different card number to each adapter (do not duplicate card number setting).


¡EThe card number starts from 0 to 15.