NuDAQ

723X Series
32 Channels Isolated
Digital I/O Card
User’s Manual
@Copyright 1996~1999 ADLink Technology Inc.
All Rights Reserved.

Manual Rev 3.00: Aug 11,1999

The information in this document is subject to change without prior notice in order
to improve reliability, design and function and does not represent a commitment on
the part of the manufacturer.
In no event will the manufacturer be liable for direct, indirect, special, incidental, or
consequential damages arising out of the use or inability to use the product or
documentation, even if advised of the possibility of such damages.
This document contains proprietary information protected by copyright. All rights
are reserved. No part of this manual may be reproduced by any mechanical,
electronic, or other means in any form without prior written permission of the
manufacturer.

Trademarks
NuDAQ is registered trademarks of ADLink Technology Inc., MS-DOS, Windows
95, Windows NT are registered trademark of Microsoft Corporation. Intel is a
registered trademark of Intel Corporation. Other product names mentioned herein
are used for identification purposes only and may be trademarks and/or registered
trademarks of their respective companies.

Contents•• 2
 CONTENTS
Chapter 1 INTRODUCTION................................... 1
1.1 FEATURES ................................................................................... 2
1.1.1 PCI-7230 and cPCI-7230 Features.............................................. 2
1.1.2 PCI-7233/H and Features ........................................................... 2
1.1.4 PCI-7234 Features...................................................................... 2
1.2 SPECIFICATIONS OF PCI-7230/CPCI-7230..................................... 3
1.3 SPECIFICATIONS OF PCI-7233/PCI-7233H .................................... 4
1.4 SPECIFICATIONS OF PCI-7234 ...................................................... 5
1.5 SOFTWARE SUPPORTING .............................................................. 5
1.5.1 Programming Library................................................................. 5
1.5.2 ActiveX Controls........................................................................ 6
1.5.3 LabView Driver........................................................................... 6
1.5.4 DDE Server and InTouch............................................................ 6
1.5.5 ISaGRAF Driver.......................................................................... 6
1.5.6 InControl Driver ......................................................................... 6
1.5.7 Full Software Package ............................................................... 6

Chapter 2 INSTALLATION .................................... 7

2.1 WHAT YOU HAVE ......................................................................... 7
2.2 UNPACKING ................................................................................. 8
2.3 PCB LAYOUT .............................................................................. 8
2.4 PCI CARD INSTALLATION OUTLINE ................................................. 9
2.4.1 Hardware configuration ............................................................. 9
2.4.2 PCI slot selection....................................................................... 9
2.5 DEVICE I NSTALLATION IN WINDOWS 95/98.................................... 10
2.6 CONNECTOR PIN ASSIGNMENT .................................................... 11
2.6.1 PCI-7230 Pin Assignment ........................................................ 11
2.6.2 cPCI-7230 Pin Assignment ...................................................... 12
2.6.3 PCI-7233 Pin Assignment ........................................................ 13
2.6.4 PCI-7234 Pin Assignment ........................................................ 14

Chapter 3 REGISTER & OPERATION THEOREM 15

3.1 I/O PORT BASE ADDRESS .......................................................... 15
3.2 I/O REGISTERS FORMAT ............................................................. 16

Contents•• i
 3.3 DIGITAL I NPUT REGISTER ............................................................ 17
3.4 DIGITAL O UTPUT REGISTER ........................................................ 17
3.5 ISOLATED DIGITAL I NPUT CIRCUITS .............................................. 18
3.6 ISOLATED DIGITAL O UTPUT CIRCUITS ........................................... 18
3.7 CHANGE OF STATE DETECTION.................................................... 19
3.7.1 What is COS? ................................................................................ 19
3.7.2 Structure of COS detection & Dual Interrupt System ................... 20
3.7.3 COS Detection............................................................................... 20

Chapter 4 C/C++ LIBRARIES .............................. 21

4.1 INSTALLATION ............................................................................ 21
4.1.1 MS-DOS Software Installation ................................................. 21
4.1.2 Windows 95 Software Installation ........................................... 22
4.2 SOFTWARE DRIVER NAMING CONVENTION .................................... 23
4.3 INITIALIZATION ........................................................................... 24
4.4 DIGITAL I NPUT ........................................................................... 25
4.5 DIGITAL O UTPUT ........................................................................ 26
4.6 INTERRUPT RELATIVE FUNCTIONS ................................................ 27
4.6.1 _723X_Set_INT_Control ............................................................... 27
4.6.2 _723X_Get_IRQ_Status................................................................ 28
4.6.3 _723X_CLR_IRQ........................................................................... 29
4.6.4 Interrupt Enable ........................................................................... 29
4.6.5 Interrupt Disable........................................................................... 30

PRODUCT WARRANTY/SERVICE.........................
WARRANTY/SERVICE 31

Contents•• ii
1

Introduction

This manual describes the contents of PCI-723X family products. Include:

PCI-7230: Isolated 16-CH DI and 16-CH DI Card
PCI-7233: Isolated 32-CH DI Card with COS detection
PCI-7233H: Isolated High-speed 32-CH DI Card with COS
PCI-7234: Isolated 32-CH DO Card
cPCI-7230: Isolated 16-CH DI and 16-CH DI Module for 3U
CompactPCI
These products are with high isolation voltage and 32 DI or DO channels.
The high isolation voltage protects your computer against damage
caused by accidental contact with high external voltage and eliminates
troublesome ground loops.
The PCI-7230/cPCI-7230 provides 32 isolated digital I/O, 16 Isolated
inputs and 16 isolated outputs. The isolated I/O channels are isolated to
5,000 Vrms (excluding cables).
The PCI-7233 provides 32 isolated digital input channels with COS
(change-of-state detection). The high speed version PCI-7233H provides
32-CH isolated digital input .The isolation voltage of PCI-7233H is high up
to 2,500 Vrms (excluding cables).
The PCI-7234 provides 32 isolated digital output (Darlington transistor)
channels. The isolation voltage is high up to 5,000 Vrms (excluding
cables), both channel-to-channel and channel-to-computer.
The PCI-7230/7233/7234 use ASIC PCI controller to interface the board
to the PCI bus. The ASIC fully implement the PCI local bus specification
Rev 2.1. All bus relative configurations, such as base memory address
and interrupt assignment, are automatically controlled by BIOS software.
It does not need any user interaction and pre-study for the configurations.
This removes the burden of searching for a conflict-free configuration,
which can be very time-consuming and difficult with some other bus
standards.

Introduction • 1
1.1 Features

1.1.1 PCI-7230 and cPCI-7230 Features

• 16 Isolated Digital Input Channels
• 16 Isolated Digital Output Channels
• High output driving capability
• 2,500 Vrms high voltage isolation
• Interrupt is controlled from external signal
• Dual interrupt trigger
• 200mA sink current on isolated output channels
• Up to 24V voltage protection for isolated input
• 37-pin D-type connector

1.1.2 PCI-7233/H and Features

• 32 Isolated Digital Input Channels
• 5000 Vrms high voltage isolation
• Up to 24V voltage protection for isolated input
• Interrupt is generated by COS (change-of-state) detection
• Dual interrupt trigger
• High-speed isolator (1ms) version PCI-7233H available with 2500 Vrms
isolation voltage
• 37-pin D-type connector

1.1.4 PCI-7234 Features

• 32 Isolated Digital Output Channels
• High output driving capability
• 200mA sink current on isolated output channels
• 5,000 Vrms high voltage isolation
• 37-pin D-type connector

2 • Introduction
1.2 Specifications of PCI-7230/cPCI-7230
♦ Isolated Digital I/O ( DIO )
• Optical Isolated Input Channel
Numbers of Channel: 16 digital inputs
Input Voltage: up to 24Vdc
8 Logic “L”: 0~2.4V
8 Logic “H”: 3~24V
Input resistance: 1.2KΩ @ 0.5W
Isolated voltage: 5000 Vrms
Throughput: 10K Hz
• Optical Isolated Output channel
Numbers of Channel: 16 digital outputs
Output Voltage: open collector minimum 5V, maximum 35V DC
Sink Current:
8 200 mA max @ 100 % duty, for one of the 8 transistor device ON
8 370mA @ duty 10% for all transistors devices ON
8 140mA @ duty 50% for all transistors devices ON
(Note: the pulse width is 25ms for one duty cycle.)
Isolated voltage: 5000 Vrms
Throughput: 10K Hz
• Interrupt sources
Channel 0 and channel 1 of digital input channels
♦ General Specifications
• Connector: 37-pin D-type connector for PCI-7230
50-pin SCSI-II type connector for cPCI-7230
• Operating Temperature: 0° C ~ 60° C
• Storage Temperature: -20° C ~ 80° C
• Humidity: 5 ~ 95%, non-condensing
• Power Consumption:
PCI-7230: +5 V @ 150 mA (typical)
cPCI-7230: +5 V @ 270 mA (typical)
• Dimension: Compact size
PCI-7230 107mm(H) X 153mm(L)
cPCI-7230 Standard 3U ComapctPCI form factor

Introduction • 3
1.3 Specifications of PCI-7233/PCI-7233H

♦ Isolated Digital Input

• Optical Isolated Input Channel (PCI-7233)
Numbers of Channel: 32 digital inputs
Input Voltage: up to 24Vdc
8 Logic “L”: 0~2.4V
8 Logic “H”: 3~24V
Input resistance: 1.2 KΩ @ 0.5W
Isolated voltage: 5000 V rms
Throughput: 10K Hz
• Optical Isolated Input Channel (PCI-7233H)
Numbers of Channel: 32 digital inputs
Input Voltage: up to 24Vdc
8 Logic “L”: 0~3.2V
8 Logic “H”: 3.5~24V
Input resistance: 1.2KΩ @ 0.5W
Isolated voltage: 2500 V rms
Throughput: High speed 500 KHz
• Dual-interrupt sources:
Change-of-state (COS) on any 16 DI lines of LSB
Change-of-state (COS) on any 16 DI lines of MSB
♦ General Specifications
• Connector: 37-pin D-type connector
• Operating Temperature: 0° C ~ 60° C
• Storage Temperature: -20° C ~ 80° C
• Humidity: 5 ~ 95%, non-condensing
• Power Consumption: +5V @ 300 mA for PCI-7233
+5V @ 550 mA for PCI-7233H
• Dimension: Compact size only 158 mm x 107 mm

4 • Introduction
1.4 Specifications of PCI-7234
♦ Isolated Digital Output
• Optical isolated Output channel
Numbers of Channel: 32 digital output
Output Voltage: open collector 5V (min) to 35V (max)
Output type: Darlingtoin transistors
Sink Current:
8 200 mA max @ 100 % duty, for one of the 8 transistors ON
8 370mA @ duty 10% for all transistors devices ON
8 140mA @ duty 50% for all transistors devices ON
(pulse width 25ms)
Isolated voltage: 5000 Vrms
Throughput: 10K Hz
♦ General Specifications
• Connector: 37-pin D-type connector
• Operating Temperature: 0° C ~ 60° C
• Storage Temperature: -20° C ~ 80° C
• Humidity: 5 ~ 95%, non-condensing
• Power Consumption: +5 V @ 190 mA (typical)
• Dimension: Compact size only 95mm(H) X 143mm(L)

1.5 Software Supporting

1.5.1 Programming Library

For the customers who are writing their own programs, we provide MS-
DOS Borland C/C++ programming library and Windows-95 DLL for PCI-
7230 series products. Both DOS and Windows-95 libraries are shipped
with the board. Windows-95 library can also be used under Windows-98.
PCIS-DASK is the Data Acquisition Software Kit including the native
device driver and the DLL for Windows-98/NT, which can be used for
many programming environments, such as VC++, VB, and Delphi.
Please contact your dealer to purchase PCIS-DASK.
The cPCI-7230 is shipped with the PCIS-DASK for Windows NT
programming. For the others hardware, the PCIS-DASK is optional.

Introduction • 5
 1.5.2 ActiveX Controls
For the customers who familiar ActiveX controls and VB programming, we
suggest to use the DAQBenchTM ActiveX Control components for your
application. The DAQBenchTM components for PCI-7230 family can only
work under Windows NT. Windows 98 version of PCI-7230 family
ActiveX control is coming soon.

1.5.3 LabView Driver

The PCIS-LVIEW includes the PCI-7230’s VIs which is used to interface
with NI’s LabView software package. The PCIS-LVIEW supports
Windows-95/98/NT.

1.5.4 DDE Server and InTouch

DDE is stand for Dynamic Data Exchange specifications. The PCIS-DDE
includes the PCI-7230’s DDE server. The PCIS-DDE server is included in
the “ADLink-Wonderware InTouch 7.0”. The DDE server can be used
conjunction with any DDE client under Windows-NT environment.

1.5.5 ISaGRAF Driver

The ISaGRAF is an IEC1131-3 SoftPLC control program developing
environment. The PCIS-ISG includes ADLink products’ target drivers for
ISaGRAF under windows NT environment.

1.5.6 InControl Driver

The InControl is an IEC 1131-3 SoftPLC control program developing
environment. The PCIS-ICL includes ADLink products’ driver for
InControl under Windows NT environment.

1.5.7 Full Software Package

Full software package is provided here, PCIS-FULL, for all ADLink’s
software drivers on PCI series data acquisition cards.
PCIS-FULL: PCIS-DASK, PCIS-LVIEW, PCIS-VEE, PCIS-DDE, PCIS-
ISG and PCIS-ICL included.
With this full package, you can apply the PCI-723X family products to any
development environment.

6 • Introduction
 2

Installation

This chapter describes the configurations of the PCI-7230/7233/7234. At first, the

contents in the package and unpacking information that you should care about are
described. The PCI-7230, 7233 or 7234 is plug-and-play and very easy to install
into any PC system with PCI slots.

Please follow the follow steps to install the PCI-7230 family products.

w Check what you have (section 2.1)

w Unpacking (section 2.2)
w Check the PCB (section 2.3)
w Install the hardware (section 2.4)
w Install the software drivers and run utility to test (section 2.5)
w Cabling with external devices (section 2.6, 2.7)

2.1 What You Have

In addition to this User's Manual, the package includes the following items:
• PCI-723X family Isolated Digital I/O Card
• ADLink All-in-one CD-ROM
If any of these items is missing or damaged, contact the dealer from whom
you purchased the product. Save the shipping materials and carton in case
you want to ship or store the product in the future.

Installation • 7
2.2 Unpacking
Your PCI-7230, cPCI-7230, PCI-7233, PCI-7233H or PCI-7234 card
contains sensitive electronic components that can be easily damaged by
static electricity.

The card should be done on a grounded anti-static mat. The operator

should be wearing an anti-static wristband, grounded at the same point as
the anti-static mat.
Inspect the card module carton for obvious damage. Shipping and handling
may cause damage to your module. Be sure there are no shipping and
handing damages on the module before processing.
After opening the card module carton, extract the system module and place
it only on a grounded anti-static surface component side up.
Again inspect the module for damage. Press down on all the socketed IC's
to make sure that they are properly seated. Do this only with the module
place on a firm flat surface.

Note: DO NOT APPLY POWER TO THE CARD IF IT HAS BEEN

DAMAGED.

You are now ready to install your PCI Card.

2.3 PCB Layout

PCI-7230
CN1

PCI Connector Chip

CN2

Figure 2.1 PCI-7230 PCB Layout

8 • Installation
2.4 PCI card Installation Outline

2.4.1 Hardware configuration

PCI card has plug and play PCI controller on board. The memory usage
(I/O port locations) of the PCI card is assigned by system BIOS. The
address assignment is done on a board-by-board basis for all PCI cards in
the system.
2.4.2 PCI slot selection
Your computer will probably have both PCI and ISA slots. Do not force the
PCI card into a PC/AT slot. The NuDAQ PCI card can be used in any PCI
slot.
Installation Procedures
1. Read through this manual, and setup the jumper according to your
application
2. Turn off your computer, Turn off all accessories (printer, modem,
monitor, etc.) connected to computer.
3. Remove the cover from your computer.
4. Select a 32-bit PCI expansion slot. PCI slots are short than ISA or
EISA slots and are usually white or ivory.
5. Before handling the PCI-7230/7233/7234, discharge any static
buildup on your body by touching the metal case of the computer.
Hold the edge and do not touch the components.
6. Position the board into the PCI slot you selected.
7. Secure the card in place at the rear panel of the system unit using
screw removed from the slot.

Installation • 9
2.5 Device Installation in Windows 95/98
While you first plug PCI-723x card and enter Windows 95/98, the system
will detect this device automatically. Please follow the steps to install the
device.

1. Click the Next button in the Update Device Driver Wizard window,
Win95 will start to search floppy drive A for the PCI-723x driver
information, After fail to find the information in drive A, it will display
the message “Windows was unable to locate a driver for this
device.”
2. Insert ADLink’s All-in-one CD-ROM drive.
3. Click the “Other Location…” button in the Update Device Driver
Wizard Window, then the Select Other Location windows will
appear.
4. Click Browse button to invoke the Browser for Folder window, then
select the location
X:\Win95Inf\723x (X indicates the CD-ROM drive).

10 • Installation
2.6 Connector Pin Assignment

2.6.1 PCI-7230 Pin Assignment

The pin assignment of the 37 pins D-type connector CN2, which is an
isolated DIO signal connector, is shown below.

IDI_0 (1)
(20) IDI_1
IDI_2 (2)
(21) IDI_3
IDI_4 (3)
(22) IDI_5
IDI_6 (4)
(23) IDI_7
IDI_8 (5)
(24) IDI_9
IDI_10 (6)
(25) IDI_11
IDI_12 (7)
(26) IDI_13
IDI_14 (8)
(27) IDI_15
EICOM (9)
(28) EOGND
EOGND(10)
(29) EOGND
ID0_0 (11)
(30) ID0_1
ID0_2 (12)
(31) ID0_3
ID0_4 (13)
(32) ID0_5
ID0_6 (14)
(33) ID0_7
ID0_8 (15)
(34) ID0_9
ID0_10 (16)
(35) ID0_11
ID0_12 (17)
(36) ID0_13
ID0_14 (18)
(37) ID0_15
VDD (19)

Legend:
IDI_n :Isolated digital input channel #n
IDO_n :Isolated digital output channel #n
EICOM :Common Ground or Common power of isolated input
channels
EOGND :Ground return path of isolated output channels
VDD :Power supply of isolated output channels
Note: The VDD must provided by external power supply 10~30 VDC.

EOGND 1 2 EOGND

Installation • 11
 2.6.2 cPCI-7230 Pin Assignment
The pin assignment of the cPCI-7230’s 50 pins SCSI-II type connector CN1
is shown in the following diagram.

VDD (1) (26) VDD

EOGND (2) (27) EOGND
EOGND (3) (28) EOGND
EOGND (4) (29) EOGND
ID0_7 (5) (30) ID0_14
ID0_6 (6) (31) ID0_15
ID0_5 (7) (32) ID0_12
ID0_4 (8) (33) ID0_13
ID0_3 (9) (34) ID0_10
ID0_2 (10) (35) ID0_11
ID0_1 (11) (36) ID0_8
ID0_0 (12) (37) ID0_9
IDI_3H (13) (38) IDI_7L
IDI_3L (14) (39) IDI_7H
IDI_2H (15) (40) IDI_6L
IDI_2L (16) (41) IDI_6H
IDI_1H (17) (42) IDI_5L
IDI_1L (18) (43) IDI_5H
IDI_0H (19) (44) IDI_4L
IDI_0L (20) (45) IDI_4H
IDI_11 (21) (46) IDI_15
IDI_10 (22) (47) IDI_14
IDI_9 (23) (48) IDI_13
IDI_8 (24) (49) IDI_12
EICOM (25) (50) EICOM

Legend:
IDI_n : Isolated digital input channel #n
IDO_n : Isolated digital output channel #n
EICOM : Common ground or common power of isolated input
channels #8~15
IDI_nH : High input of isolated differential DI channel #n
IDI_nL : Low input of isolated differential DI channel #n
EOGND : Ground return path of isolated output channels
VDD : Power input signal for fly-wheel diode of DO channels

12 • Installation
2.6.3 PCI-7233 Pin Assignment
The pin assignment of the 37 pins D-type connector CN1 is illustrated in
the following.

IDI0 (1)
(20) IDI1
IDI2 (2)
(21) IDI3
IDI4 (3)
(22) IDI5
IDI6 (4)
(23) IDI7
IGND (5)
(24) IDI8
IDI9 (6)
(25) IDI10
IDI11 (7)
(26) IDI12
IDI13 (8)
(27) IDI14
IDI15 (9)
(28) IGND
IDI16 (10)
(29) IDI17
IDI18 (11)
(30) IDI19
IDI20 (12)
(31) IDI21
IDI22 (13)
(32) IDI23
IGND (14)
(33) IDI24
IDI25 (15)
(34) IDI26
IDI27 (16)
(35) IDI28
IDi29 (17)
(36) IDI30
IDI31 (18)
(37) IGND
IGND (19)

Legend:
IDI n : Isolated digital input channel n
IGND : Isolated common ground

Installation • 13
 2.6.4 PCI-7234 Pin Assignment
The pin assignment of the 37 pins D-type connector CN2, which is an
isolated DIO signal connector, is shown below.

IDO0 (1)
(20) IDO1
IDO2 (2)
(21) IDO3
IDO4 (3)
(22) IDO5
IDO6 (4)
(23) IDO7
IGND (5)
(24) IDO8
IDO9 (6)
(25) IDO10
IDO11 (7)
(26) IDO12
IDO13 (8)
(27) IDO14
IDO15 (9)
(28) IGND
IDO16 (10)
(29) IDO17
IDO18 (11)
(30) IDO19
IDO20 (12)
(31) IDO21
IDO22 (13)
(32) IDO23
IGND (14)
(33) IDO24
IDO25 (15)
(34) IDO26
IDO27 (16)
(35) IDO28
IDO29 (17)
(36) IDO30
IDO31 (18)
(37) IGND
VDD (19)

Legend:
IDO n: Isolated digital output signal channel n
I.GND: Isolated Ground for all isolated output channels
VDD : Power input signal for fly-wheel diode of DO channels

14 • Installation
 3

Register & Operation

Theorem

In this chapter, the register format and primitive digital I/O operations of 723X
series products will be specified. The operation theorem of the digital I/O, interrupt
are introduced. Before programming or applying the 723X cards to your
applications, please go through this chapter to understand the features of the
functions.

3.1 I/O Port Base Address

The PCI-723X products function as a 32-bit PCI target device to any
master on the PCI bus. There are three types of registers on the PCI-
723X: PCI Configuration Registers (PCR), Local Configuration Registers
(LCR) and PCI-723X registers.

The PCR, which conform the PCI-bus specifications R2.1, is initialized and
controlled by the system plug & play PCI BIOS. Please refer to the PCI
BIOS specification to understand how to get information from the PCR.

The LCR is specified by the PCI bus controller (PCI-9050). It is not

necessary for users to understand the details of the LCR if you use the
software library. The base address of the LCR is assigned by the PCI PnP
BIOS. The assigned address is located at offset 14h of PCR. Please refer
to the PCI-9050’s data sheet for the detail operation of the LCR and also
the register format of the PCR. For detail information about PCI-9050, you
can download its datasheet from http:\\www.plxtech.com.
The registers of 723X series are shown in the Section 3.2. The base
address of the 723X registers are also assigned by the PCI PnP BIOS.
The assigned base address is stored at offset 18h of PCR. Therefore,
users can read the PCR to get the base address by using the BIOS
function call. Note that the PCI-723X registers are all 32 bits. The users
can access these registers by 8 bits or 16-bit I/O instructions.

Registers & Operation Theorem • 15

3.2 I/O Registers Format

The PCI-7230/cPCI-7230 requires one 32-bit address in the PC I/O

address space. Table 3.1 shows the I/O address of each register with
respect to the base address.

Address Write Read

Base (0 - 1 ) Isolated DO Isolated DI
Table 3.1. I/O Address Map of PCI-7230 and cPCI-7230

The PCI-7233 requires one 32-bit address in the PC I/O address space.
Table 3.2 shows the address.

Address Write Read

Base (0 - 3 ) -- Isolated DI
Table 3.2. I/O Address Map of PCI-7233/PCI-7233HS

The PCI-7234 requires one 32-bit address in the PC I/O address space.
Table 3.3 shows the address.

Address Write Read

Base (0 - 3 ) Isolated DO --
Table 3.3. I/O Address Map of PCI-7234

Cautions:
1. All the above I/O ports are 32-bit width
2. 8-bit or 16-bit I/O access is NOT allowed.

16 • Registers & Operation Theorem

3.3 Digital Input Register
There are total 16 and 32 digital input channels on the PCI-7230 ( cPCI-
7230) and PCI-7233 respectively. Each bit is corresponding to a signal on
the digital input channel. The IDI_16~IDI_31 are only available on PCI-
7233/PCI-7233H.

Address: BASE + 0 ~ BASE + 3

Attribute: read only
Data Format:

Bit 7 6 5 4 3 2 1 0
Base + 0 IDI_7 IDI_6 IDI_5 IDI_4 IDI_3 IDI_2 IDI_1 IDI_0
Base + 1 IDI_15 IDI_14 IDI_13 IDI_12 IDI_11 IDI_10 IDI_9 IDI_8
Base + 2 IDI_23 IDI_22 IDI_21 IDI_20 IDI_19 IDI_18 IDI_17 IDI_16
Base + 3 IDI_31 IDI_30 IDI_29 IDI_28 IDI_27 IDI_26 IDI_25 IDI_24

IDI_N: Isolated Digital Input CH N

3.4 Digital Output Register

There are total 16 and 32 digital output channels on the PCI-7230 (cPCI-
7230) and PCI-7234 respectively. Each bit is corresponding to a signal on
the digital output channel. The IDO_16~IDO_31 are only available on PCI-
7234.

Address: BASE + 0 ~ BASE + 3

Attribute: write only
Data Format:

Bit 7 6 5 4 3 2 1 0
Base + 0 IDO_7 IDO_6 IDO_5 IDO_4 IDO_3 IDO_2 IDO_1 IDO_0
Base + 1 IDO_15 IDO_14 IDO_13 IDO_12 IDO_11 IDO_10 IDO_9 IDO_8
Base + 2 IDO_23 IDO_22 IDO_21 IDO_20 IDO_19 IDO_18 IDO_17 IDO_16
Base + 3 IDO_31 IDO_30 IDO_29 IDO_28 IDO_27 IDO_26 IDO_28 IDO_24

IDO_N: Isolated Digital Output CH N

Registers & Operation Theorem • 17

3.5 Isolated Digital Input Circuits
The isolated digital output is an open collector transistor output. The input
can accept voltage upto 24V. The input resisters on PCI-7230/7233 and
cPCI-7230 are 1.2K Ω. The connection between outside signal and PCI-
7230, cPCI-7230 and PCI-7233 is shown below.

Isolated Input 1.2K Ohm

EICOM

Isolated Input 1.2K Ohm

EICOM

Figure 3.1 Input circuits of PCI-7230, cPCI-7230 and PCI-7233

1.2K Ohm
DI_nH

DI_nL

Figure 3.2 Differential Input circuits of cPCI-7233

3.6 Isolated Digital Output Circuits

The connection of isolated digital output is shown as following diagram.
The PCI-7230 need external 10~30V DC power from the VDD pin to
provide the power source of the digital output circuit. The cPCI-7230 and
PCI-7234 is equipped with internal DC-DC converter.

On PCI-7230, an external voltage source, minimum 10V, maximum 35

VDC, is necessary to power the internal isolated circuits. It is connected
with pin-19 of CN2, When the isolated digital output goes to high, the sink
current will be from VDD.

18 • Registers & Operation Theorem

 On PCI-7234 and cPCI-7230, the VDD pin is used as “fly-wheel” diode,
which can protect the driver if the loading is inductance loading such as
relay, motor or solenoid. If the loading is resistance loading such as resistor
or LED, the connection to fly-wheel diode is not necessary.

Therefore, the first step for connecting the output with external device is to
distinguish the type of loading. For example, if the loading is LED or
resistor, you can use the following wiring diagram.
The VDD is opened on PCI-7234 and cPCI-7230.
VDD

Resistive
Loading
+
- VDD
5~35V

EOGND

DO circuit of PCI-7230, PCI-7234, and cPCI-7230

If the loading is a inductance loading such as relay, you can use the
following wiring diagram. The VDD must connect to the external power to
form a fly-wheel current loop.
VDD

Inductance
Loading
+
- VDD
5~35V

EOGND

3.7 Change of State Detection

3.7.1 What is COS?

The COS (Change of State) means when the input state (logic level) is
changed from low to high or from high to low. The COS detection circuit is
used to detect the edge of level change. In the PCI-7233 card, the COS
detection circuit is applied to all the 32 channels input channels. When
anyone channel is changed, the COS detection circuit generate an
interrupt request signal.

Registers & Operation Theorem • 19

 3.7.2 Structure of COS detection & Dual Interrupt System
The dual interrupt system is used in PCI-7233. Dual interrupt means the
hardware can generate two interrupt request signals in the same time and
the software can service these two request with ISR. Note that the dual
interrupt do not mean the card occupy two IRQ levels. The two interrupt
request signals (INT1 and INT2) are comes from COS detection output
signal #1 and #2. The INT1 is inserted when any channel of 0 ~ 15 is
changed. The INT2 is inserted when any channel of 16 ~ 31 is changed.
Fig3.6.1 show the interrupt system.

DI0~ INT1
DI15
DI0~ PLD1
DI31
32
Channel PCI
Isolated Clear Bridge
Input IRQ
DI16~ INT2
DI31
PLD2
PCI Bus

Fig.3.6.1 Dual Interrupt System of PCI-7233

3.7.3 COS Detection
The following timing is an example of the COS detection. Every DI
signal’s edge change can be detected. All the DI channels edge will be
‘OR’ together to generate the INT1 or INT2 IRQ signals.

If INT1 or INT2 irq Signals generate, the signal will be latch its state. The
user cam use the “_7233_CLR_IRQ” function to clear, INT1 or INT2 IRQ
signal state.
DI_0
DI_1

DI_0 COS
DI_1 COS
INT1

Clear_IRQ Clear_IRQ Clear_IRQ

20 • Registers & Operation Theorem

 4

C/C++ Libraries

In this chapter, the PCI-7230/7233/7234 and cPCI-7230 software library for DOS
and Windows 95/98, C/C++ language library is described.

4.1 Installation
In the following sections, we use PCI-7230/cPCI-7230 as an example to
show how to install the software utility and drivers. PCI-7230 and cPCI-
7230 are fully compatible in software. To install PCI-7233 or PCI-7234,
just change the all the name from 7230 to 7233 or from 7230 to 7234 in
all procedures.

The PCI-7230/7233/7234's software includes an utility software, C-

language library and some demonstration programs which can help you
reduce programming work. The following procedures use the PCI-7230
as an example for installation. The install procedure for PCI-7233 and
PCI-7234 is the same as PCI-7230.
4.1.1 MS-DOS Software Installation
1. Turn our PC's power switch on
2. Put the ADLink’s All-in-one CD into the appropriate CD drive.
3. Type the commands(X indicates the CD ROM driver):
X:\>CD \NuDAQPCI\7230\DOS
X:\ NuDAQPCI\7230\DOS> SETUP
4. An installation completed message will be shown on the screen.
After installation, all the files of PCI-7230 Library & Utility for DOS are
stored in C:\ADLink\7230\DOS directory.

Product Warranty/Service • 21
 4.1.2 Windows 95 Software Installation
1. Turn your PC's power switch on and enter Windows 95
2. Put the ADLink’s All-in-one CD into the appropriate CD drive.
3. If autorun setup program is not invoked automatically, please
execute X:\Setup.exe.(X indicates the CD ROM drive)
4. Select NuDAQ PCIàDriversàWin95/98àPCI-7230 to setup PCI-
7230 DLL for Windows 95.
Setup first displays a Welcome dialog box. Please click Next button to
go on installation.
After a welcome dialog box, Setup prompts the following dialog box for
you to specify the destination directory. The default path is
C:\ADLink\7230\w95. If you want to install PCI-7230 DLL for Windows
95 in another directory, please click Browse button to change the
destination directory.

Then you can click Next to begin installing PCI-7230 DLL for Windows
95.
After you complete the installation of PCI-7230 Software, PCI-7230’s
DLL (7230.DLL) is copied to Windows System directory (default is
C:\WINDOWS\SYSTEM for Win-95) and the driver files
(W95_7230.VXD and PCIW95.VXD) are also copied to the appropriate
directory.
After finishing the installation, you can execute the utility by typing
following command as an example:

C> CD \ADLink\7230\DOS\UTIL
C> 7230UTIL

22 • C/C++ Libraries
4.2 Software Driver Naming Convention
We defined some data types in acl_pci.h. These data types are used by
PCI-7230 library. We suggest you to use these data types in your
application programs. The following table shows the data type names and
their range.

Type Name Description Range

U8 8-bit ASCII character 0 to 255
I16 16-bit signed integer -32768 to 32767
U16 16-bit unsigned integer 0 to 65535
I32 32-bit signed integer -2147483648 to 2147483647
U32 32-bit single-precision floating-point 0 to 4294967295
F32 32-bit single-precision floating-point -3.402823E38 to 3.402823E38
F64 64-bit double-precision floating-point -1.797683134862315E308 to
1.797683134862315E309
Boolean Boolean logic value TRUE, FALSE

The functions of PCI-7230's software drivers are using full-names to

represent the functions' real meaning. The naming convention rules are :
In DOS Environment :
_{hardware_model}_{action_name}. e.g. _7230_Initial ().
In Windows 95 Environment :
In order to recognize the difference between DOS library and
Windows 95 library, A capital "W" is put on the head of each function
name of the Windows 95 DLL driver. e.g.
W_7230_Initial ()

There are 3 functions provided by PCI-7230 software drivers.

The detail descriptions of each function are specified in the following
sections.

Product Warranty/Service • 23
4.3 Initialization
@ Description
The PCI-7230 or PCI-7233 or PCI-7234 cards must be initialized before
using. The software library can control multiple PCI-7230/7233/7234
cards. Because in PCI bus architecture, the cards meet the plug and
play specifications, the IRQ and I/O address are assigned by system
BIOS directly.
@ Syntax
C/C++ ( DOS)
U16 _7230_Initial(U16 *existCards, PCI_INFO *pciInfo )
U16 _7233_Initial(U16 *existCards, PCI_INFO *pciInfo )
U16 _7234_Initial(U16 *existCards, PCI_INFO *pciInfo )
C/C++ (Windows 95/98)
U16 W_7230_Initial (U16 *existCards, PCI_INFO *pciInfo)
U16 W_7233_Initial (U16 *existCards, PCI_INFO *pciInfo)
U16 W_7234_Initial (U16 *existCards, PCI_INFO *pciInfo)
Visual Basic (Windows 95/98)
W_7230_Initial (existCards As Integer, pciInfo As
PCI_INFO) As Integer
W_7233_Initial (existCards As Integer, pciInfo As
PCI_INFO) As Integer
W_7234_Initial (existCards As Integer, pciInfo As
PCI_INFO) As Integer
@ Arguments:
existCards: The total number of installed PCI-7230 /7233/7234
cards. The returned value shows how many PCI-
7230/7233/7234 cards are installed in your system.
pciinfo: It is a structure to memorize the PCI bus plug and play
initialization information which is decided by p&p
BIOS. The PCI_INFO structure is defined in acl_pci.h.
The base I/O address and the interrupt channel
number is stored in pciinfo which is for reference.
@ Return Code:
ERR_NoError
ERR_BoardNoInit
ERR_PCIBiosNotExist

24 • C/C++ Libraries
4.4 Digital Input
@ Description
This function is used to read 16-bit digital inputs data from digital input
port. You can get the 16 bits data from _7230_DI by using this function.
You can get the 32 bits data from _7233_DI by using this function.
@ Syntax
C/C++ ( DOS)
U16 _7230_DI( U16 cardNo, U16 *di_data )
U16 _7233_DI( U16 cardNo, U32 *di_data )
C/C++ (Windows 95/98)
U16 W_7230_DI ( U16 cardNo, U16 *diData)
U16 W_7233_DI ( U16 cardNo, U32 *diData)
Visual Basic (Windows 95/98)
W_7230_DI (ByVal cardNo As Integer, DIData As Integer)
As Integer
W_7233_DI (ByVal cardNo As Integer, DIData As Integer)
As Integer
@ Argument :
cardNo: card number to select board
di_data: return 16-bit value from digital port.
@ Return Code :
ERR_NoError

Product Warranty/Service • 25
4.5 Digital Output
@ Description
This function is used to write data to digital output ports. There are 16
and 32 isolated digital outputs on the PCI-7230 and PCI-7234
respectively,
@ Syntax
C/C++ ( DOS)
U16 _7230_DO(U16 cardNo, U16 do_data )
U16 _7234_DO(U16 cardNo, U32 do_data )
C/C++ (Windows 95/98)
U16 W_7230_DO ( U16 cardNo, U16 doData)
U16 W_7234_DO ( U16 cardNo, U32 doData)
Visual Basic (Windows 95/98)
W_7230_DO (ByVal cardNo As Integer, ByVal DOData As
Integer) As Integer
W_7234_DO (ByVal cardNo As Integer, ByVal DOData As
Integer) As Integer
@ Arguments:
cardNo : card number to select board
do_data : value will be written to digital output port
@ Return Code:
ERR_NoError

26 • C/C++ Libraries
4.6 Interrupt Relative Functions

4.6.1 _723X_Set_INT_Control
@ Description
The PCI-7230/PCI-7233 is equipped with dual interrupts system, two
interrupt sources can be generated and be checked by the software.
This function is used to select and control PCI-7230/PCI-7233 interrupt
sources by writing data to interrupt control register. For PCI-7230, the
interrupt sources can be set as from channel 0 (INT1) or channel 1
(INT2) of digital input channel. For PCI-7233, the interrupt source can
be set as from Channel 0 ~15 changing (INT1) or channel 16 ~ 31
changing (INT2) of digital input channels. Only one of interrupt
sources can be set as enable.
@ Syntax
C/C++ (DOS)
void _7230_Set_INT_Control (U16 cardNo, U16 int1Flag,
U16 int2Flag)
void _7233_Set_INT_Control (U16 cardNo, U16 int1Flag,
U16 int2Flag)
C/C++ (Windows 95/98)
void W_7230_Set_INT_Control (U16 cardNo, U16 int1Flag,
U16 int2Flag)
void W_7233_Set_INT_Control (U16 cardNo, U16 int1Flag,
U16 int2Flag)
Visual Basic (Windows 95/98)
W_7230_Set_INT_Control (ByVal cardNo As Integer, ByVal
int1Flag As Integer, ByVal int2Flag As Integer)
W_7233_Set_INT_Control (ByVal cardNo As Integer, ByVal
int1Flag As Integer, ByVal int2Flag As Integer)
@ Argument
cardNo : card number to select board
int1Flag : INT1 setting; 0: disable, 1: enable
int2Flag : INT2 setting; 0: disable, 1: enable
@ Return Code:
None

Product Warranty/Service • 27
 4.6.2 _723X_Get_IRQ_Status
@ Description
The PCI-7230/PCI-7233 has dual interrupts system. Two interrupt
sources can be generated and be checked by the software. This
function is used to distinguish which interrupt is inserted if both INT1
and INT2 interrupts are used.
@ Syntax
C/C++ ( DOS)
void _7230_Get_IRQ_Status (U16 cardNo, U16
*int1Status, U16 *int2Status)
void _7233_Get_IRQ_Status (U16 cardNo, U16
*int1Status, U16 *int2Status)
C/C++ (Windows 95/98)
void W_7230_Get_IRQ_Status (U16 cardNo, U16
*int1Status, U16 *int2Status)
void W_7233_Get_IRQ_Status (U16 cardNo, U16
*int1Status, U16 *int2Status)
Visual Basic (Windows 95/98)
W_7230_Get_IRQ_Status (ByVal cardNo As Integer,
int1Status As Integer, int2Status As Integer)
W_7233_Get_IRQ_Status (ByVal cardNo As Integer,
int1Status As Integer, int2Status As Integer)
@ Argument
cardNo : card number to select board
int1Status :INT1 status; 0: interrupt is not from INT1, 1: interrupt is
from INT1
int2Status :INT2 status; 0: interrupt is not from INT2, 1: interrupt is
from INT2
@ Return Code:
None

28 • C/C++ Libraries
4.6.3 _723X_CLR_IRQ
@ Description
This function is used to clear interrupt request. This function is only
available in DOS library.
@ Syntax
C/C++ (DOS)
void _7230_CLR_IRQ (U16 cardNo)
void _7233_CLR_IRQ (U16 cardNo)
@ Argument
None
@ Return Code
None

4.6.4 Interrupt Enable

@ Description
This function is only available in Windows 95 driver. This function is
used to start up the interrupt control. After calling this function,
every time an IRQ generated, a software event is signaled. So that
in your program, you can use wait operation to wait for the event.
When the event is signaled, it means an interrupt is generated.
Please refer to the sample program 7230int.c. Please note that the
PCI-7234 do not have any interrupt.
@ Syntax
C/C++ (Windows 95/98)
U16 W_7230_INT_Enable (U16 cardNo, HANDLE *hEvent)
U16 W_7233_INT_Enable (U16 cardNo, HANDLE *hEvent)
Visual Basic (Windows 95/98)
W_7230_INT_Enable (ByVal cardNo As Integer, hEvent As
Long) As Integer
W_7233_INT_Enable (ByVal cardNo As Integer, hEvent As
Long) As Integer
@ Arguments
cardNo : card number to select board
hEvent : the address of an array of two handles. hEvent[0] and
hEvent[1] are the events for interrupt signals INT1 and INT2
respectively.
@ Return Code:
ERR_NoError
ERR_BoardNoInit

Product Warranty/Service • 29
 4.6.5 Interrupt Disable
@ Description
This function is only available in Windows 95 driver. This function is
used to disable the interrupt signal generation. Please refer to the
sample program 7230int.c.
@ Syntax
C/C++ (Windows 95/98)
U16 W_7230_INT_Disable (U16 cardNo)
U16 W_7233_INT_Disable (U16 cardNo)
Visual Basic (Windows 95/98)
W_7230_INT_Disable (ByVal cardNo As Integer) As
Integer
W_7233_INT_Disable (ByVal cardNo As Integer) As
Integer
@ Arguments
cardNo : card number to select board
@ Return Code:
ERR_NoError
ERR_BoardNoInit

30 • C/C++ Libraries
Product Warranty/Service

Seller warrants that equipment furnished will be free form defects in

material and workmanship for a period of one year from the confirmed
date of purchase of the original buyer and that upon written notice of any
such defect, Seller will, at its option, repair or replace the defective item
under the terms of this warranty, subject to the provisions and specific
exclusions listed herein.

This warranty shall not apply to equipment that has been previously
repaired or altered outside our plant in any way as to, in the judgment of
the manufacturer, affect its reliability. Nor will it apply if the equipment has
been used in a manner exceeding its specifications or if the serial number
has been removed.

Seller does not assume any liability for consequential damages as a

result from our products uses, and in any event our liability shall not
exceed the original selling price of the equipment.

The equipment warranty shall constitute the sole and exclusive remedy of
any Buyer of Seller equipment and the sole and exclusive liability of the
Seller, its successors or assigns, in connection with equipment purchased
and in lieu of all other warranties expressed implied or statutory, including,
but not limited to, any implied warranty of merchant ability or fitness and
all other obligations or liabilities of seller, its successors or assigns.

The equipment must be returned postage-prepaid. Package it securely

and insure it. You will be charged for parts and labor if you lack proof of
date of purchase, or if the warranty period is expired.

Product Warranty/Service • 31