Advantech PCL-818L Manuale utente

PCL-818L

High-performance

DAS card with

programmable gain

This documentation and the software routines contained in the PCL-

818L software disk are copyrighted 1994 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. However, Advantech

Co., Ltd. assumes no responsibility for its use, nor for any infringe-

ments of the rights of third parties which may result from its use.

Acknowledgments

PC-LabCard is a trademark of Advantech Co., Ltd. IBM and PC are

trademarks of International Business Machines Corporation. MS-

DOS, Microsoft C and QuickBASIC are trademarks of Microsoft

Corporation. BASIC is a trademark of Dartmouth College. Intel is a

trademark of Intel Corporation. TURBO C is a trademark of Borland

International.

Part No. 2003818082 4th Edition

Printed in Taiwan October 1995

Contents

Chapter 1 General information ................................ 1

Introduction........................................................................ 2

Features.............................................................................. 2

Specifications..................................................................... 3

Daughterboards .................................................................. 5

Software support ................................................................ 7

Chapter 2 Installation ............................................... 9

Initial inspection .............................................................. 10

Switch and jumper settings .............................................. 10

Connector pin assignments .............................................. 16

Hardware installation ....................................................... 19

Software installation ........................................................ 20

Chapter 3 Signal connections ................................. 21

Analog input connections ................................................ 22

Expanding analog inputs.................................................. 24

Analog output connection................................................ 25

Digital signal connections................................................ 25

Chapter 4 Register structure and format ............. 27

A/D data registers – BASE+0/1....................................... 29

Software A/D trigger – BASE+0 ..................................... 29

A/D range control – BASE+1.......................................... 30

MUX scan register – BASE+2......................................... 30

Digital I/O registers – BASE+3/11 .................................. 32

D/A output registers – BASE+4/5 ................................... 32

A/D status register – BASE+8 ......................................... 33

Control register – BASE+9.............................................. 34

Timer/counter enable register – BASE+10...................... 36

Programmable timer/counter registers – B+12/13/14/15. 36

Chapter 5 A/D conversion ....................................... 37

A/D Data format and status register ................................ 38

Input range selection ........................................................ 39

MUX setting .................................................................... 39

Trigger mode.................................................................... 40

A/D data transfer.............................................................. 41

How to make an A/D conversion ..................................... 42

Chapter 6 D/A conversion ....................................... 43

General information ......................................................... 44

D/A applications .............................................................. 45

Chapter 7 Digital input and output ....................... 47

Chapter 8 Programmable timer/counter ............... 49

The Intel 8254.................................................................. 50

Counter read/write and control registers.......................... 50

Counter operating modes ................................................. 53

Counter operations........................................................... 55

Counter applications ........................................................ 56

Chapter 9 Direct memory access operation .......... 57

Using DMA transfer with the PCL-818L ........................ 59

Appendix A Block Diagram ...................................... 61

Appendix B Connector, switch and VR Locations . 63

Appendix C PC I/O port address map ..................... 65

Appendix D Calibration ........................................... 67

VR assignment................................................................. 68

A/D calibration ................................................................ 69

D/A calibration ................................................................ 69

Chapter 1 General information 1

General information

CHAPTER

2PCL-818L User's Manual

Introduction

The PCL-818L is a high performance multi-function data acquisition

card for IBM PC/XT/AT or compatible computers. It offers the five

most desired measurement and control functions: 12-bit A/D conver-

sion, D/A conversion, digital input, digital output and timer/counter.

Automatic channel scanning circuitry and on-board SRAM let you

perform multiple-channel A/D conversion with DMA and individual

channel gains.

The PCL-818L is an advanced new version of our popular PCL-818.

A custom 160-pin ASIC chip integrates the functions of the full-size

PCL-818. This chip gives you maximum accuracy and reliability,

along with minimum cost, size and power consumption.

The resulting half-size card is fully software compatible with the PCL-

818. This puts rich software support and a wide variety of external

signal conditioning boards at your disposal.

The PCL-818L is excellent for data acquisition, process control,

automatic testing and factory automation.

Features

• 16 single-ended or eight differential analog inputs, switch selectable

• 12-bit A/D, up to 40 KHz sampling rate with DMA transfer and

different gain for each channel.

• Software programmable gain values

• Software selectable analog input ranges (bipolar):

Two ranges, selected by jumper JP7

±10, ±5, ±2.5, ±1.25 or ±5, ±2.5, ±1.25, ±0.625

• 16 digital inputs and 16 digital outputs, TTL/DTL compatible

• One 12-bit analog output channel

• Flexible triggering options: software trigger, programmable pacer

trigger and external pulse trigger.

• Data transfer by program control, interrupt handler routine or DMA

• New-technology 160 pin 1.0 mm CMOS ASIC chip

Chapter 1 General information 3

Specifications

åAnalog Input (A/D converter)

• Channels: 16 single-ended or 8 differential, switch selectable

• Resolution: 12 bits

• Input ranges (bipolar, VDC): ±0.625, ± 1.25, ±2.5, ±5 or

±1.25, ± 2.5, ±5, ±10

All input ranges are software programmable.

• Overvoltage: Continuous ±30 V max.

• Conversion type: Successive approximation

• Conversion rate: 40 KHz max.

• Accuracy: ±(0.01% of reading), ±1 bit

• Linearity: ±1 bit

• Trigger mode: Software trigger, on-board programmable pacer

trigger or external trigger

• Ext. trigger: TTL compatible.

Load is 0.4 mA max. at 0.5 V and -0.05 mA max. at 2.7 V

• Data transfer: Program, interrupt or DMA

åAnalog output (D/A converter)

• Channels: 1 channel

• Resolution: 12 bits

• Output range: 0 to +5 (+10) V with on-board -5 (-10) V reference.

Max. ±10 V with external DC or AC reference

• Reference:

Internal: -5 V or -10 V

External DC or AC: ±10 V max.

• Conversion type: 12 bit monolithic multiplying

• Linearity: ±0.5 bit

• Output drive: ±5 mA max.

• Settling time: 5 microseconds

4PCL-818L User's Manual

åDigital input

• Channel: 16 bits

• Level: TTL compatible

• Input voltage:

Low: 0.8 V max.

High: 2.0 V min.

• Input load:

Low: 0.4 mA max. at 0.5 V

High: 0.05 mA max. at 2.7 V

åDigital Output

• Channel: 16 bits

• Level: TTL compatible

• Output voltage:

Low: Sink 8 mA at 0.5 V max.

High: Source -0.4 mA at 2.4 V min.

åProgrammable timer/counter

• Device: Intel 8254 or equivalent

• Counters: 3 channels, 16 bit.

2 channels are permanently configured as programmable pacers

1 channel is free for your applications

• Input, gate: TTL/CMOS compatible

• Time base:

Pacer channel 1:10 MHz or 1 MHz, switch selectable

Pacer channel 2:Takes input from channel 1

Pacer channel 0:Internal 100 KHz or external clock (10 MHz max).

Source selected with Timer/Counter Enable

• Pacer output: 0.00023 Hz (71 minutes/pulse) to 2.5 MHz

åInterrupt channel

• Level: IRQ 2 to 7, software selectable

• Enable: Via INTE bit of Control Register (BASE+9)

Chapter 1 General information 5

åDMA channel

• Level: 1 or 3, jumper selectable

• Enable: Via DMAE bit of Control Register (BASE+9)

åGeneral

• Power consumption:

+5 V: 210 mA typical, 500 mA max.

+12 V: 20 mA typical, 100 mA max.

-12 V: 20 mA typical, 40 mA max.

• I/O connector: 20 pin post headers for I/O connection. Adapter

available to convert to DB-37 connector

• Analog input/output/counter connector: DB-37

•I/O base: Requires 16 consecutive address locations. Base address

definable by the DIP switch SW1 for address line A9-A4. (Factory

setting is Hex 300)

• Operating temp: 0 to +50oC

• Storage temp: -20 to +65oC

Daughterboards

We offer a wide variety of optional daughterboards to help you get the

most from your PCL-818L. You will need the PCLD-774 Analog

Expansion Board or PCLD-8115 Wiring Terminal Board to make

connections.

åPCLD-789 Amplifier/Multiplexer board

This analog input-signal conditioning board multiplexes up to 16

differential inputs to one A/D input channel. A high grade instrumen-

tation amplifier provides switch selectable gains of 0.5, 1, 2, 10, 50,

100, 200, 1000 or user defined.

åPCLD-788 Relay Multiplexer Board

This board multiplexes up to 16 differential inputs to one analog

output channel. It offers isolated break-before-make high voltage

switching and a CJC circuit for thermocouple measurement.

6PCL-818L User's Manual

åPCLD-787 8-channel simultaneous sample and hold board

This board lets you simultaneously acquire up to eight analog inputs

with less than 30 nsec of channel-to-channel sample time uncertainty.

åPCLD-786 AC/DC power SSR and relay driver board

This board holds eight opto-isolated solid state relay modules and

provides an additional eight outputs to drive external relays.

åPCLD-785B and PCLD-885 relay output boards

These boards let you control relays through the PCL-818L's 16-bit

digital output channels. PCLD-785B provides 24 SPDT relays, while

the PCLD-885 provides 16 SPST power relays.

åPCLD-782B Isolated D/I Board

This board provides 24 opto-isolated digital input channels and a

cable to connect to the PCL-818L's digital input ports.

åPCLD-779 8-channel relay-isolated multiplexer

and amplifier board

This board lets you easily make multi-channel temperature measure-

ments. We designed it for the cost-sensitive customer who requires

precision, low-level signal measurement and isolation for industrial

applications.

åPCLD-770 with PCLD-7701 and PCLD-7702 modules

PCLD-770 accepts signals from up to eight PCLD-7701 or PCLD-

7702 signal conditioning modules and multiplexes them into a single

analog input channel. PCLD-7701 is an isolated amplifier module and

the PCLD-7702 is an amplifier with I/V source. You can cascade up to

ten PCLD-770s for a total of 80 differential input channels.

åPCLD-5B16 module carrier board

This board holds 16 5B-series input and/or output modules. We supply

5B modules for wide variety of signal input signals, including

thermocouples, strain gauges and RTDs.

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