ADLINK Technology NuDAQ PCI-7258 User manual

NuDAQ
PCI-7258
PhotoMos Relay Cards
User’s Guide
Recycled Paper

©Copyright 2002 ADLINK Technology Inc.
All Rights Reserved.
Manual Rev: 1.04: October 18, 2002
Part NO: 50-11132-100
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.
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NuDAQ is registered trademarks of ADLINK Technology Inc. Other product
names mentioned herein are used for identification purposes only and may
be trademarks and/or registered trademarks of their respective companies.

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Table of Contents•i
Table of Contents
Tables and Figures................................................................iii
How to Use This Guide.........................................................iv
Introduction..............................................................................1
1.1 Features.........................................................................2
1.2 Applications ....................................................................2
1.3 Specifications .................................................................2
1.4 Software Support ............................................................4
1.4.1 Programming Library................................................................4
1.4.2 PCIS-LVIEW: LabVIEW® Driver............................................4
1.4.3 PCIS-VEE: VEE Driver............................................................5
1.4.4 PCIS-OCX: ActiveX Controls..................................................5
1.4.5 PCIS-DDE: DDE Server and InTouchTM...............................5
1.4.6 PCIS-ISG: ISaGRAFTM driver.................................................5
1.4.7 PCIS-ICL: InControlTM Driver..................................................6
1.4.8 PCIS-OPC: OPC Server..........................................................6
Getting Started ........................................................................7
2.1 What you have................................................................7
2.2 Unpacking ......................................................................8
2.3 PCB Layout ....................................................................9
2.4 Board ID....................................................................... 11
2.6 Connector Pin Assignments........................................... 12
2.7 Termination Board Connection....................................... 13
Registers................................................................................15
3.1 I/O Address Map........................................................... 15
3.2 Relay Output Control Register ....................................... 16
3.3 Relay Output Read Back Register.................................. 17
3.4 Isolated Digital Input Register ........................................ 18
3.5 Clear IRQ register ......................................................... 18
3.6 Handling PCI Controller Registers .................................. 19

ii •Table of Contents
Operation Theory.................................................................20
4.1 PhotoMos Relay Output ................................................ 20
4.2 Isolated Digital Input...................................................... 22
4.3 Interrupt Architecture..................................................... 22
C/C++ DOS Libraries...........................................................23
5.1 Programming Guide ...................................................... 23
5.1.1 Naming Convention................................................................23
5.1.2 Data Types...............................................................................24
5.2 _7258 Initial.................................................................. 25
5.3 _7258_DO.................................................................... 26
5.4 _7258_DO_Read_Back................................................. 26
5.5 _7258_DI ..................................................................... 27
5.6 _7258_INT_Control....................................................... 27
5.9 _7258_CLR_IRQ .......................................................... 28
5.10 _7258_GET_IRQ_Status............................................... 28
Warranty Policy....................................................................29

Tables and Figures•iii
Tables and Figures
Tables
Table 1. Board ID Setting Conditions........................................................11
Table 2. Registers Address Map................................................................15
Table 3. Data Types and Range................................................................24
Figures
Figure 1: PCI-7258 PCB Layout....................................................................9
Figure 2: Board ID Dipswitch.......................................................................11
Figure 3: Pin Assignment of PCI-7258 CN1..............................................12
Figure 4: PhotoMos relay schematic..........................................................20
Figure 5: PhotoMos relay wiring diagram ..................................................21
Figure 6: Protection circuit for an Inductive load.......................................21
Figure 7: Photo-Coupler................................................................................22

iv•How to Use This Guide
How to Use This Guide
This manual is intended to assist users to configure the PCI-7258 PhotoMos
Relay Card. It is divided into 5 chapters.
Chapter 1, “Introduction”, gives an overview of the product features,
applications, and specifications.
Chapter 2, “Getting Started”, describes how to install the PCI-7258.
The Board ID switch and connectors’ pin assignments are
also described.
Chapter3, “Registers”, describes the registers that are available to the
PCI-7258. The information is important for programmers who
want to control the hardware with low level programming
languages.
Chapter 4, “Operation Theory”, describes how to operate the PCI-
7258. The PhotoMos relay and isolated digital input are
introduced. Some programming concepts are alsodescribed.
Chapter 5, “C/C++ libraries”, describes the software utility and the
software libraries of the PCI-7258. This chapter also
outlines basic requirements for programming your own
software application.

Introduction •1
1
Introduction
The PCI-7258 PhotoMos relay card is a basic Digital I/O card for PCI bus
computers used in industrial applications.
This PCI-7258 provides 32 PhotoMos relay actuators and 2 opto-isolated
digital inputs. All relays are of Form A type and is very suited for constant
ON/OFF control devices.
Other useful feature includes the Board ID. It is convenient for board
identification when two or more PCI-7258 cards are in a system. All I/O
signals are routed via a 68-pin SCSI connector.

2•Introduction
1.1 Features
The PCI-7258 PhotoMos relay actuator and D/I Card provides the following
advanced features:
•32-bit PCI-Bus, Plug and Play
•32 PhotoMos relay actuator outputs
•2 opto-isolated digital inputs
•On-board relay driving circuits
•Digital input channel 0 & 1 interrupt
•Board ID
1.2 Applications
•Industrial ON/OFF control
•Energy management
•Laboratory automation
•Industrial automation
•Switch contact status sensing, limit switch monitoring,
•Integrate with A/D and D/A cards to implement a data acquisition & control
system
1.3 Specifications
♦Digital input
•Input channels: 2
•Photo-coupler: PC-3H4
•Input current:
P10 mA rated
P50 mA max. for isolated input

Introduction •3
•Input Voltage:
PUp-to 24 VDC or 24VAC
PLogic Low: 0~2V
PLogic High 5~24V
•Input impedance:2.4 KΩ/ 0.5W
•Isolated voltage: 2,500 Vrms channel-to-system
♦Relay Output
•Output channels: 32
•Relay type: 32 SPST (Form A)
•Load voltage (peak AC): 350V
•Continuous load current (peak AC): 0.12A
•Peak load current: 0.3A
•I/O isolation voltage: 1,500 V AC
•Output turn on resistance (typical): 17O
•Output off state leakage current (Maximum): 1µA
•Turn on time (typical): 0.23 ms
•Turn off time (typical): 0.04 ms
♦General Specifications
•Bus: 32-bit PCI bus
•Dimension: 174 mm x 106 mm, standard PCI half size
•Operating temperature: 0 ~ 60°C
•Storage temperature: -20 °C ~ 80°C
•Humidity: 5 to 95% non-condensing
♦Power Consumption
•+5V @ 380 mA (All relays energized)

4•Introduction
1.4 Software Support
ADLINK provides versatile software drivers and packages for users’ different
approach to building a system. ADLINK not only provides programming
libraries such as DLL for most Windows based systems, but also provide
drivers for other software packages such as LabVIEW®, VEETM, InTouchTM,
InControlTM, ISaGRAFTM, and so on.
All software options are included in the ADLINK CD. Non-free software
drivers are protected with licensing codes. Without the software code, you
can install and run the demo version for two hours for trial/demonstration
purposes. Please contact ADLINK dealers to purchase the formal license.
1.4.1 Programming Library
For customers who are writing their own programs, we provide function
libraries for many different operating systems, including:
•DOS Library: Borland C/C++ and Microsoft C++. Functional
descriptions are included in this user’s guide
•PCIS-DASK: Include device drivers and DLL for Windows 98,
Windows NT and Windows 2000. DLL is binary compatible across
Windows 98, Windows NT and Windows 2000. That means all
applications developed with PCIS-DASK are compatible across
Windows 98, Windows NT and Windows 2000. The developing
environment can be VB, VC++, Delphi, BC5, or any Windows
programming language that allows calls to a DLL. The user’s guide
and function reference manual of PCIS-DASK are in the CD. Please
refer the PDF manual files under \\Manual_PDF\Software\PCIS-
DASK
The above software drivers are shipped with the board. Please refer to the
“Software Installation Guide” for installation procedures.
1.4.2 PCIS-LVIEW: LabVIEW® Driver
PCIS-LVIEW contains the VIs, which is used to interface with NI’s LabVIEW®
software package. The PCIS-LVIEW supports Windows 95/98/NT/2000. The
LabVIEW®drivers is shipped free with the board. You can install and use
them without a license. For more information about PCIS-LVIEW, please
refer to the user’s guide in the CD. (\\Manual_PDF\Software\PCIS-LVIEW).

Introduction •5
1.4.3 PCIS-VEE: VEE Driver
The PCIS-VEE includes user objects, which are used to interface with the
VEE software package. PCIS-VEE supports Windows 95/98/NT. The VEE
drivers are shipped free with the board. You can install and use them without
a license. For more information about PCIS-VEE, please refer to the user’s
guide in the CD. (\\Manual_PDF\Software\PCIS-VEE).
1.4.4 PCIS-OCX: ActiveX Controls
We suggest users who are familiar with ActiveX controls and VB/VC++
programming use the PCIS-OCX ActiveX control components library to
develop their applications. PCIS-OCX is designed for Windows 98/NT/2000.
For more information about PCIS-OCX, please refer to the user's guide in the
CD. (\Manual_PDF\Software\PCIS-OCX\PCIS-OCX.PDF).
The above software drivers are shipped with the board. Please refer to the
“Software Installation Guide” for installation procedures.
ADLINK also supply an ActiveX control software called DAQBench.
DAQBench is a collection of ActiveX controls for measurement and
automation applications. With DAQBench, you can develop custom user
interfaces to display and analyze data you acquired or received from other
sources, or integrate with popular applications or data sources. For more
information about DAQBench, please refer to the user's guide in the CD.
(\Manual_PDF\Software\DAQBench\DAQBenchManual.PDF). There is a
free 4-hour evaluation version of DAQBench available in the CD. DAQBench
is not free. Please contact ADLINK dealers or ADLINK to purchase the
software license.
1.4.5 PCIS-DDE: DDE Server and InTouchTM
DDE stands for Dynamic Data Exchange. The PCIS-DDE includes the PCI
cards’ DDE server. The PCIS-DDE server is free and is included in the
ADLINK CD. The DDE server can be used in conjunction with any DDE client
under Windows 98/NT/2000.
1.4.6 PCIS-ISG: ISaGRAFTM driver
The ISaGRAF Workbench is an IEC1131-3 SoftPLC control development
environment. The PCIS-ISG includes ADLINK product drivers for ISaGRAF
under Windows NT environment. The PCIS-ISG is included in the ADLINK
CD. It is not free. Please contact ADLINK dealers or ADLINK to purchase
the license.

6•Introduction
1.4.7 PCIS-ICL: InControlTM Driver
PCIS-ICL is the InControl driver, which supports Windows NT. The PCIS-ICL
is included in the ADLINK CD. It is not free and requires a license. Please
contact ADLINK dealers or ADLINK to purchase the license.
1.4.8 PCIS-OPC: OPC Server
PCIS-OPC is an OPC server, which can be used to link with other OPC
clients. There are many software packages on the market that can provide
the OPC clients. The PCIS-OPC supports Windows 98, NT, and 2000. It is
not free. Please contact ADLINK dealers or ADLINK to purchase the license.

Getting Started•7
2
Getting Started
This chapter describes how to install and setup the PCI-7258. The contents
in the package and unpacking information that you should be aware of are
outlined first.
2.1 What you have
In addition to the User’s Manual, the package should include the following
items:
•PCI-7258 PhotoMos relay cards
•ADLINK Software CD
•Software Installation Guide
If any of these items are missing or damaged, contact ADLINK or 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.

8•Getting Started
2.2 Unpacking
The card contains electro-static sensitive components that can be easily be
damaged by static electricity.
Therefore, the card should be handled 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 damages. Shipping and handling
may cause damage to your module. Be sure there are no shipping and
handling damages on the modules carton before continuing.
After opening the card module carton, extract the system module and place it
only on a grounded anti-static surface with component side up.
Again, inspect the module for damages. 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 ATTEMPT TO INSTALL A DAMAGED BOARD IN THE
COMPUTER.
You are now ready to install your card.

Getting Started•9
2.3 PCB Layout
The location of the connectors and switches on the PCI-7258 are shown in
figure 1 below. Descriptions are outline in the proceeding sections.
Figure 1: PCI-7258 PCB Layout

10 •Getting Started
2.4 External LED
Figure 2: PCI-7258 External LED connector
The PCI-7258 card is designed with 32 LEDs, each indicating the operation
status of the 32 relays. In addition, there are also 32 external LED connectors
available for users’ to use as so pleases. Utilizing the external LEDs
connecting to JP1 or JP2, users can have a visual status of each relay
displayed on a chassis, panel or on any apparatus. Only LED’s with a
forward voltage (Vf) lower than 2V will operate. Each external LED connector
has a current limiting resistor (330O) connected to the +5V supply, therefore
external current limiting circuitry for external LED’s are not necessary.
The direction of the external LED’s connection is shown in Figure 2. Before
connecting a LED to a connector, make sure the LED’s orientation is correct.
A
K
JP1
LED1
LED10
LED16
A
K
JP2
LED17
LED26
LED32

Getting Started•11
2.5 Board ID
When two or more data acquisition cards are installed in a system, it can be
tedious trying to identify a specific card. For easier identification, the PCI-
7258 implemented a Board ID function. By setting the Dipswitch located at
S1, users can assign an ID address to a specific card and access the card
through software programming. For more details about the Board ID in
programming, please refer to chapter 5. Table 1 below shows all dipswitch
setting conditions.
Figure 3: Board ID Dipswitch
Switch No.
Board ID 1234
0 (default) 1111
10111
21011
30011
41101
50101
61001
70001
81110
90110
10 1010
11 0010
12 1100
13 0100
14 1000
15 0000
Table 1. Board ID Setting Conditions
Note: 1=on, 0=off
ON
1
2
3
4

12 •Getting Started
2.6 Connector Pin Assignments
The PCI-7258 card is equipped with a 68-pin SCSI connector (CN1). Figure
3 defines the pin assignment for the connector.
NO1
135 NO18
COM1
236 COM18
NO2
337 NO19
COM2
438 COM19
NO3
539 NO20
COM3
640 COM20
NO4
741 NO21
COM4
842 COM21
NO5
943 NO22
COM5
10 44 COM22
NO6
11 45 NO23
COM6
12 46 COM23
NO7
13 47 NO24
COM7
14 48 COM24
NO8
15 49 NO25
COM8
16 50 COM25
NO9
17 51 NO26
COM9
18 52 COM26
NO10
19 53 NO27
COM10
20 54 COM27
NO11
21 55 NO28
COM11
22 56 COM28
NO12
23 57 NO29
COM12
24 58 COM29
NO13
25 59 NO30
COM13
26 60 COM30
NO14
27 61 NO31
COM14
28 62 COM31
NO15
29 63 NO32
COM15
30 64 COM32
NO16
31 65 DIO
COM16
32 66 DI1
NO17
33 67 DIGND0
COM17
34 68 DIGND1
Figure 4: Pin Assignment of PCI-7258 CN1
Legend:
NO x: Relay normal open pin x, x = 1~32
COM x: Relay common pin x, x = 1~32
DI x: Digital input pin x, x = 0~1
DIGND x: Digital input ground pin x, x = 0~1