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EVOC PCL-726 Manual

6-channel d/a
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PCL-726
6-Channel D/A
Output Card

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Summary of Contents for EVOC PCL-726

  • Page 1 PCL-726 6-Channel D/A Output Card...
  • Page 2 Trademarks PCL-726 is registered trademarks of EVOC Technology Co., Ltd. IBM PC is a registered trademark of International Business Machines 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.

  • Page 3: Table Of Contents

    3.3 D I/O R .................. 21 IGITAL EGISTER 3.4 D ................. 22 EMONSTRATION ROGRAMS PCL-726 CALIBRATION ................23 4.1 E ................23 NVIRONMENT AND TOOLS 4.2T .......... 23 HE DISTRIBUTION OF VARIABLE PRECISE RESISTOR 4.3 C ..................23 ALIBRATION STEPS APPENDIX A.

  • Page 5: How To Use This Guide

    How to Use This Guide This manual is written to help you use the PCL-726. The manual describes how to modify various settings on the PCL-726 card to meet your requirements. It is divided into four chapters. Chapter 1, “Introduction,” gives an overview of the product features.

  • Page 7: Introduction

    I/O location. Also, A rugged and reliable 37-pin D- sub style connector is provided for analog outputs. In addition to the 6 analog outputs, the PCL-726 has 16 digital inputs and 16 digital outputs, all of the digital channels are TTL compatible.

  • Page 8: Applications

    • 16 digital output channels • 16 digital input channels • Enhanced IRQ capability from IRQ3 to IRQ15 • Register structure is fully compatible with Advantech's PCL-726 1.2 Applications : • Industrial and laboratory ON/OFF control • Energy management •...
  • Page 9 4 ~ 20mA current loop( sink) • Reference Voltage : ± 10V with external DC or AC reference; Internal : -5V or -10V • Current Loop : External : +10V or -10V max. • Current Loop exciting voltage : 4 ~ 20 mA (sink) 8V(min.) , 36V(max.) for current loop 4mA ~ 20mA •...
  • Page 10 ♦ General Specification • Dimensions : Half-Size ( 162 mm X 116 mm) • Bus : PC/AT bus • Slot : One 36 pin slot and one 62-pin slot • I/O connectors : 37-pin D-sub connector ( analog output) 20-pin ribbon connector ( digital I/O) •...

  • Page 11: Installation

    Installation This chapter describes how to install the PCL-726. At first, the contents in the package and unpacking information that you should be careful are described. The jumpers and switches setting for the PCL-726's base address and voltage source are also specified.

  • Page 12: Unpacking

    2.2 Unpacking Your PCL-726 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.

  • Page 13: Pcl-726'S Layout

    2.3 PCL-726's Layout Figure 2.1 PCL-726’ s Layout Installation • 7...

  • Page 14: Jumper And Dip Switch Description

    DIP switch SW1 ( refer to Table 2.1). The address settings for I/O port from Hex 200 to Hex 3F0 is described in Table 2.2 below. The default base address of your PCL-726 is set to hex 2C0 in the factory( see Figure 2.1).
  • Page 15 SW1 : Base Address = 0x2C0 A ( 8 NC ) Figure 2.2 Default Base Address Setting fixed I/O port address(hex) 200-20F 210-21F (*) 2C0-2CF 300-30F 3F0-3FF (*) : default setting ON : 0 X : don't care OFF : 1 Note : A4, ..., A9 correspond to PC bus address lines.

  • Page 16: Irq Level Setting

    Figure 2.3 IRQ Setting 2.7 D/A Output Configuration The PCL-726‘s output channels can be configured as different analog output styles, and they are depended on D/A converter's reference voltage source and output mode( Bipolar or Unipolar). The reference voltage can be internal generated or by external reference voltage from the Reference Voltage Input ( REF.IN) of connector CN3.
  • Page 17 The jumper settings for each output channel are illustrated as Figure 2.4 below. The internal -5V is set as default reference voltage. Reference External Ref. -10V Ref. -5V Ref. Voltage ( default ) Source -10V -10V -10V Jumper Setting Figure 2.4 Reference Voltage Source Besides, each output channel can be set as Bipolar or Unipolar output.
  • Page 18 The different output ranges of output CH0 are shown as the following table. The settings for reminder channels(CH1 ~ CH5) should follow the same rules as CH0. 12 • Installation...

  • Page 19: Connector Pin Assignment

    2.8 Connector Pin Assignment The PCL-726 comes equipped with one 37-pin D-sub (CN3) and two 20-pin insulation displacement connectors (CN1 and CN2). The P1 is located at the rear plate; the CN1 and CN2 are located on board. CN3 is used for analog outputs and reference voltage input, CN2 for digital inputs, CN1 digital outputs.
  • Page 20 14 • Installation...

  • Page 21: Signal Connection

    2.9 Signal Connection A correct signal connection is quite important to send data accurately. In this section, a helpful information for how to make proper signal connection when the PCL-726 is used is specified. 2.9.1 Voltage Output Connection ACL-6126 Side External Side V.OUT...

  • Page 22: Software Installation

    The procedures should be followed as : 1. Turn your PC's power switch on 2. Put the " PCL-726 Utility" diskette into your floppy drive A: or B: 3. Make a directory in your hard disk and change to this directory C>...
  • Page 23 : C> 726UTIL the following diagram will be displayed on you screen, there are seven utilities can be used in this program, they are 1. PCL-726's base address setting 2. Calibration 3. D/A Channel's Output Range Setup 4. D/A Outputs 5.

  • Page 24: Programming

    Programming 3.1 I/O Port Address The PCL-726 requires 16 consecutive addresses in the PC s I/O address space. The starting address (Base) is selected on the DIP switch SW1 ( see Section 2.5). The following table (Table 4.1) shows the location of each register and its description.

  • Page 25: D/A Data Register

    3.2 D/A Data Register The D/A converter expect digital input data to be in binary right- justified form, as shown in Figure 3.1. High Byte D11 D10 D9 Low Byte The base address from Base+0 to Base+11 are used for D/A conversion.

  • Page 26: Unipolar Numbering

    AD11 .. AD0 : Analog to digital data. AD0 is Least Significant Bit, and AD11 is Most Significant Bit. X : Don't care Two analog output range alternatives are provided by the PCL-726 : Unipolar and Bipolar. The numbering of the converted data with have different presentation for different output range.

  • Page 27: Digital I/O Register

    There are 16 digital input channels and 16 digital output channels provided by PCL-726. These I/O channels use the address Base + 12 and Base + 13 for output channels, and the address Base + 14 and Base + 15 for input channels.

  • Page 28: Demonstration Programs

    3.4 Demonstration Programs Some demonstration programs and a very simple Analog output and Digital I/O library source are included in the Utility Diskette. The description of each files for demonstration is listed as following table : a head file which should be included in your program 726.H : when you use any function in the library 726LIB.C.

  • Page 29: Pcl-726 Calibration

    PCL-726 Calibration To ensure the measurement accuracy, It is very important to cabibrate the PCL-726 card. It is necessary to know how to calibrate PCL-726 before you start to use it. This chapter will guide you through the calibrate procedure to avoid unnecessary measurement errors.
  • Page 30 +5.00V 4.3.4 Unipolar current calibration with –5V internal reference voltage 1. Follow the description at 2.7 to set the jumper. 2. Connect the terminal board PCLD-9137 3. Run 726UTIL.EXE under DOS, press <F3>, follow the current 24 • PCL-726 Calibration...
  • Page 31 Please refer to 4.3.1 to fine tuning VRx-1 precise resistor. For example, Ch2 is used under –10V internal reference voltage, only VR2-1 need to be fine tuning and so on and so forth. PCL-726 Calibration • 25...

  • Page 32: Appendix A. I/O Port Address Map

    Appendix A. I/O Port Address Map I/O Address Device 000-01F DMA controller 1 020-03F interrupt controller 040-05F Timer 060-06F Keyboard 070-07F Real-time clock 080-09F DMA page register 0A0-0BF interrupt controller 2 0C0-0DF DMA controller 0F0-0FF Math coprocessor 100-1EF not usable 1F0-1F8 Fixed disk 200-207...

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