Advantech PCI-1751U Manual de usuario descargar pdf (Pagina 11)

7 Chapter 2

2.3 Jumper Settings

We designed the PCI-1751U with ease-of-use in mind. It is a "plug and

play" card, i.e. the system BIOS assigns the system resources such as

base address and interrupt automatically. There are only two functions

with 11 jumpers to be set by the user. The following section describes

how to configure the card. You may want to refer to the figure below for

help in identifying card components.

Figure 2.1: Location of Connectors and Jumpers

2.3.1 Jumper Settings to Set Ports as Input or Output by

Software

By shorting the upper two pins of jumpers JPA0, JPB0, JPC0L, JPC0H,

JPA1, JPB1, JPC1L or JPC1H, a user sets the corresponding ports to be

configurable as input or output ports by software. (JPA0 means jumper

for port A0, JPB0 means jumper for port B0, etc.) The initial state of

each port after system power on or reset will be set as input logic 1 (volt-

age high), provided that no external signals are connected, and provided

jumper JA1 does not determine otherwise (see Jumper J4 discussion

below).

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Advantech PCI-1751U Manual de usuario Pagina 11