User manual

PCI-1762 User Manual 26

C.1 Overview

The PCI-1762 is delivered with an easy-to-use 32-bit DLL driver for user program-

ming under the Windows XP/Vista/7 operating system. We advise users to program

the PCI-1762sing the 32-bit DLL driver provided by Advantech to avoid the complex-

ity of low-level programming by register. The most important consideration in pro-

gramming the PCI-1762 the register level is to understand the function of the card's

registers. The information in the following sections is provided only for users who

would like to do their own low-level programming.

C.2 I/O Port Address Map

The PCI-1762 requires 32 consecutive addresses in the PC’s I/O space. The address

of each register is specified as an offset from the card’s base address. For example,

BASE+0 is the card’s base address and BASE+7 is the base address plus seven

bytes.

Table C-1 shows the function of each register of the PCI-1762 or driver and its

address relative to the card’s base address.

Table C.1: Register Functions

Base

Addr,

+ Deci-

mal

1514131211109876543210

R Relay Output Status

146

W Relay Output

R Isolated Digital Input

IDI

IDI0

WN/A

R Board ID Register

ID3 ID2 ID1 ID0

WN/A

R Interrupt Status Register

ID8

ID0

W Interrupt Control Register

ID8

ID0