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. However the on board switches 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 (Jumper 1)

Select RS422 or RS485 mode for port 1.

JP2 (Jumper 2)

Select receive mode for port 1.

JP3 (Jumper 3)

      Select RS422 or RS485 mode for port 2. 

JP4 (Jumper 4)

Select receive mode for port 1. 

JP5 (Jumper 5)

Select high-speed mode or normal speed mode for port 1. 

JP6 (Jumper 6)

Select high-speed mode or normal speed mode for port 1.

SW1 (Switch 1)

      Identifies card number.

DECISION Computer International Ltd.,

1. Select RS422 or RS485 Mode

        JP1    

The JP1 and JP3 are used to select RS422 mode or RS485 mode. The JP1 is used to select RS422/RS485 for port 1 and the JP3 is used to select RS422/RS485 for port2.

Pin

Mode

Short 1,2

RS422

Short 2,3

RS485

 2. Select Receive Mode

JP2                                    

The JP2 and JP4 are used to select receive mode. To short 1,2 means select receive always enable, and short 2,3 means select RTS to enable receive. The JP2 is used to select receive mode for port 1 and the JP4 is used to select receive mode for port 2.

Pin

Mode

Short 1,2

Receive always enable

Short 2,3

Enable by RTS

3. Select High Speed or Normal Speed Mode

JP5   

The JP5 and JP6 are used to select high speed mode or normal speed mode; the clock is 7.3728MHZ for high-speed mode, and 1.8432MHZ for normal speed mode. For high-speed mode, the baud rate speed up to 460K. The JP5 is used to select speed for port 1 and the JP6 is used to select speed for port 2.

Pin

Mode

Short 1,2

Normal Speed

Short 2,3

High Speed

4. 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.