USB-4751/4751L 48/24-Channel Digital Input/Output USB Module User Manual
Copyright The documentation and the software included with this product are copyrighted 2006 by Advantech Co., Ltd. All rights are reserved. Advantech Co., Ltd. reserves the right to make improvements in the products described in this manual at any time without notice. No part of this manual may be reproduced, copied, translated or transmitted in any form or by any means without the prior written permission of Advantech Co., Ltd. Information provided in this manual is intended to be accurate and reliable.
Product Warranty (2 years) Advantech warrants to you, the original purchaser, that each of its products will be free from defects in materials and workmanship for two years from the date of purchase. This warranty does not apply to any products which have been repaired or altered by persons other than repair personnel authorized by Advantech, or which have been subject to misuse, abuse, accident or improper installation.
CE This product has passed the CE test for environmental specifications when shielded cables are used for external wiring. We recommend the use of shielded cables. This kind of cable is available from Advantech. Please contact your local supplier for ordering information. Technical Support and Assistance Step 1. Visit the Advantech web site at www.advantech.com/support where you can find the latest information about the product. Step 2.
Contents Chapter 1 Introduction ..................................................... 2 1.1 1.2 Chapter 1.2.1 More on the CD ............................................................. 3 2 Installation ....................................................... 6 2.1 2.2 2.3 2.4 Chapter Hardware Features............................................................. 2 Software Overview............................................................ 3 Unpacking ...............................................
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CHAPTER 1 2 Introduction Sections include: • Hardware Features • Software Overview
Chapter 1 Introduction Thank you for buying the Advantech’s USB-4751/4751L data acquisition module. The Advantech USB-4751/4751L is a powerful data acquisition (DAS) module for the USB port. It features a unique circuit design and complete functions for data acquisition and control. 1.
1.2 Software Overview Advantech offers a rich set of DLL drivers, third-party driver support and application software on the companion CD-ROM to help fully exploit the functions of your device. Advantech’s Device Drivers feature a complete I/O function library to help boost your application performance and work seamlessly with development tools such as Visual C++, Visual Basic, Inprise C++ Builder, and Inprise Delphi. 1.2.
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CHAPTER 2 2 Installation Sections include: • Unpacking • Driver Installation • Hardware Installation • Hardware Uninstallation
Chapter 2 Installation 2.1 Unpacking After receiving your USB-4751/4751L package, please inspect its contents first. The package should contain the following items: • USB-4751/4751L Module • Shielded USB 2.0 Cable (1.8 m) • Companion CD-ROM (DLL driver included) • User Manual The USB-4751/4751L Module harbors certain electronic components vulnerable to electrostatic discharge (ESD).
2.2 Driver Installation We recommend you install the software driver before you install the USB-4751/4751L module into your system, since this will guarantee a smooth installation process. The 32-bit DLL driver Setup program for the USB-4751/4751L module is included on the companion CD-ROM that is shipped with your module package.
For further information on driver-related issues, an online version of the Device Drivers Manual is available by accessing the following path: Start\Programs\Advantech Automation \Device Manager\Device Driver’s Manual USB-4751/4751L User Manual 8
2.3 Hardware Installation Note: Make sure you have installed the software driver before you install the module (please refer to Section 2.2 Driver Installation) After the DLL driver installation is completed, you can now go on to install the USB-4751/4751L module in any USB port that supports the USB 1.1/2.0 standard, on your computer. Please follow the steps below to install the module on your system.
Figure 2.1: Unplug or Eject Hardware Dialog Step3: Select “Advantech USB-4751/L Device” and press “Stop” Button. Figure 2.2: Stop a Hardware device dialog box Step4: Unplug your USB device from the USB port. Note: Please make sure that you have closed the application before unplugging the USB device, otherwise unexpected system error or damage may occur.
CHAPTER 3 2 Signal Connections Sections include: • Overview • Digital I/O Connections • Field Wiring Considerations
Chapter 3 Signal Connections 3.1 Overview Maintaining good signal connections is one of the most important factors in ensuring that your application system is sending and receiving data correctly. A good signal connection can avoid unnecessary and costly damage to your PC and other hardware devices. 3.2 I/O Connectors USB-4751/4751L is equipped with one plug-in screw-terminal connector and two (one for USB-4751L) standard Opto-22 connectors that can be used with a variety of Advantech's wiring boards. 3.
Figure 3.
3.2.2 I/O Connector Signal Description Table 3.1: I/O Connector Signal Description Signal Ref. Direction Description PA<0~7, 10~17> GND Input/Output Digital input/ output port A, channel 0~7 & channel 10~17. PB<0~7, 10~17> GND Input/Output Digital input/ output port B, channel 0~7 & channel 10~17. PC<0~7, 10~17> GND Input/Output Digital input/ output port C, channel 0~7 & channel 10~17.
3.3 Digital I/O Connections 3.3.1 Dry Contact Support for Digital Input Each digital input channel accepts either dry contact or 0 ~ 5 VDC wet contact inputs. Dry contact capability allows the channel to respond to changes in external circuitry (e.g., the closing of a switch in the external circuitry) when no voltage is present in the external circuit. Figure 3-3 shows external circuitry with both wet and dry contact components, connected as an input source to one of the card's digital input channels.
3.4 Field Wiring Considerations • When you use USB-4751/4751L to acquire data from outside, noises in the environment might significantly affect the accuracy of your measurements if due cautions are not taken. The following measures will be helpful to reduce possible interference running signal wires between signal sources and the USB-4751/4751L.
APPENDIX A 2 Specifications
Appendix A Specifications A.1 Digital Input/Output Channels Programming Mode Input Voltage Output Voltage +5V Output Interrupt Mode 48 Bi-directional (24 for USB-4751L) 8255 PPI Mode0 Low 0.8 V max High 2.0 V min Low 0.5 V max. @ 12mA (sink) 3.8 V min. @ -12mA (source)(each line) 3.8 V min.@5mA(source)(high of every line) 100mA max. High PC0 source; PC4 gate/PC0 source A.
