Acrosser Technology AR-B2104 User manual

ACROSSER

TECHNOLOGY

served. No part of this publication may be reproduced, transmit-

ted, transcribed, stored in a retrieval system, or translated into

any language or computer language, in any form or any means,

electronic, mechanical, magnetic, optical, chemical, manual or

otherwise, without the prior written consent of Acrosser Technol-

ogy.

Acrosser, IBM, PC/XT/AT are registered trademarks.

DISCLAIMER

Acrosser Technology makes no representations or warranties

with respect to the contents hereof and specifically disclaims

any implied warranties of merchantability or fitness for any par-

ticular purpose. Further more, Acrosser Technology reserves

the right to revise this publication and to make changes from

time to time in the contents hereof without obligation of Acrosser

Technology to notify any person of such revision or changes.

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RETURNING YOUR CARD FOR SERVICE

If your card requires servicing, contact the dealer from whom

you purchased the product for service information. If you need to

ship your card to us for service, be sure it is packed in a protec-

tive carton. We recommend that you keep the original shipping

container for this purpose.

You can help assure efficient servicing of your product by follow-

ing these guidelines:

1. Include your name, address, telephone and facsimile num-

ber where you may be reached during the day.

2. A description of the system configuration and/or software

at the time of malfunction.

3. A brief description of the symptoms.

TECHNICAL SUPPORT AND USER COMMENTS

User comments are always welcome as they assist us in im-

proving the usefulness of our products and the understanding of

our publications. they form a very important part of the input

used for product enhancement and revision.

We may use and distribute any of the information you supply in

any way we believe appropriate without incurring any obligation.

You may, of course, continue to use the information you supply.

Please send your comments to Acrosser Technology Co., Ltd.

or your local sales representative.

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STATIC ELECTRICITY PRECAUTIONS

Before removing the board from its anti-static bag, read this

section about static electricity precautions.

Static electricity is a constant danger to computer systems. The

charge that can build up in your body may be more than suffi-

cient to demage integrated circuits on any PC board. It is, there-

fore, important to observe basic precautions whenever you use

or handle computer components. Although areas with humid cli-

mates are much less prone to static build-up, it is always best to

safeguard against accidents which may result in expensive re-

pairs. The following measures should generally be sufficient to

protect your equipment from static discharge:

1. Touch a grounded metal object to discharge the static elec-

tricity in your body (or ideally, wear a grounded wrist strap).

2. When unpacking and handling the board or other system

component, place all materials on an antic static surface.

3. Be careful not to touch the components on the board, espe-

cially the "golden finger" connectors on the bottom of every

card.

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CHAPTER 1 INTRODUCTION

1.1 GENERAL DESCRIPTION

The AR-B2104 card is an inexpensive 24 channel opto-isolated

open-collector output interface card for IBM PC/XT/AT or com-

patible computers. It can be easily installed in any I/O slot inside

the computer while I/O connections are made through a 37-pin

D-type connector which extends out the rear of the computer. All

outputs feature high-voltage (50V max.) outputs with common-

cathode clamp diodes for switching inductive loads. The collec-

tor-current rating of each darlington pair is 500 milliamperes.

The AR-B2104 can be used in various applications including

relay drivers, hammer drivers, lamp drivers, display drivers

(LED and gas discharge), line drivers, and logic buffers.

The AR-B2104 is configured as three independent 8-bit ports.

Controlling the outputs is as simple as writing an 8-bit word to

either of the ports. The output status can be read back by read-

ing the same address for verification. A power-up reset scheme

is implemented to insure that all outputs stay in their power-off

(high impedance) state when power is first applied to the host

computer. Each channel is equipped with an LED indicator for

monitoring its ON/OFF status.

AII external I/O devices are connected through a 37 pin D-type

connector. Connection to the AR-B2104 can be greatly simpli-

fied by adding the optional AR-B9007 screw terminal board.

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1.2 FEATURES

# 24 photo-couple isolated open-collector output

# Output status read back

# 2500 Vrms isolation

# Up to 0.5A/50V of output driving capacity

# 24 LED status indicators

# D-type 37-pin connector

# Easy to use

1.3 ORDERING INFORMATION

The following lists and describes part numbers for the AR-

B2104 cards and its accessories.

Part Number Description

AR-B2104 24 channels photo-couple isolated

open-collector output card with user’s

AR-B9007 37-pin screw terminal board for AR-B2

with 0.6m flat cable

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CHAPTER 2 INSTALLATlON

Before using your AR-B2104, you must set the base address of

the I/O port. This chapter provides information on how to set the

base address switch. Pin assignments of the I/O connector is

also provided. Figure 1-2 shows the switch and component lo-

cations of the AR-B2104 card.

2.1 BASE ADDRESS SETTING

There is one DIP switch (SW1) located on the AR-B2104 card. It

is used to select the base port address of the AR-B2104. The

operation of AR-B2104 is controlled through the output ports.

Three consecutive I/O ports are used by the AR-B2104. The

base address of these output ports are selected by using base

address switch SW1. The AR-B2104 is factory-configured for a

base address of 3E0 Hex. lf this base address is already occu-

pied, you will need to change the base address switch setting. lt

is essential that each peripheral device, such as an AR-B2104,

be assigned a unique base address within the range of 100 to

3FC Hex. and that the address is on a 4-byte boundary. Use

Table 2-1 (next page) as a guide to select an unoccupied ad-

dress.

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HEX RANGE DEVICE

00-FF Reserved For System

170-178 Fixed Disk 1

1F0-1F8 Fixed Disk 0

201 Game Port

208-20A EMS Register 0

218-21A EMS Register 1

278-27F Parallel Printer Port 3 (LTP3)

2E8-2EF Serial Port 4 (COM4)

2F8-2FF Serial Port 2 (COM2)

300-31F Prototype Card/Streaming Type Adapter

378-37F Parallel Printer Port 2 (LTP 2)

380-38F SDLC, Bisynchronous 2

3A0-3AF Bisynchronous 1

3B0-3BF Monochrome Display and Parallel Printer Port 1

3C0-3CF EGA/VGA Adapter

3D0-3DF Color/Graphics Monitor Adapter

3E8-3EF Serial Port 3 (COM3)

3F0-3F7 Diskette Controller

3F8-3FF Serial Port 1

(

COM1

)

Table 2-1 I/O port address map

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The following shows the base address switchs (SW1) and their

respective address line.

SW1 ADDRESS Address Value

LINE Hex. Dec.

Switch 8 A2 4 4

Switch 7 A3 8 8

Switch 6 A4 10 16

Switch 5 A5 20 32

Switch 4 A6 40 64

Switch 3 A7 80 128

Switch 2 A8 100 256

Switch 1 A9 200 512

BASE ADDRESS =

200*A9+100*A8+80*A7+40*A6+20*A5+10*A4+8*A3+4*A2

(Hex.)

512*A9+256*A8+128*A7+64*A6+32*A5+16*A4+8*A3+4*A2

(Dec.)

A9.....A2 = 1 If switch is ON

A9.....A2 = 0 If switch is OFF

Setting the switch to the "ON" position indicates logical "1" and

setting the switch to the "OFF" poition indicates logical "0". The

following switch (next page) setting represents an address of

3E0 Hex.

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12345678

SW1

2.2 MAIN I/O CONNECTOR

The AR-B2104 is equipped with one 37-pin D-type male con-

nector to control open-collector output. This connector and its

signal conductor functions are described in the following table.

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PIN FUNCTION PIN FUNCTION

1 CH1 20 CH20

2 CH2 21 CH21

3 CH3 22 CH22

4 CH4 23 CH23

5 CH5 24 CH24

6 CH6 25 Dcom

7 CH7 26 Dcom

8 CH8 27 Dcom

9 CH9 28 Ground

10 CH10 29 Ground

11 CH11 30 Ground

12 CH12 31 Ground

13 CH13 32 Ground

14 CH14 33 Ground

15 CH15 34 Ground

16 CH16 35 Ground

CH17

Ground

Ground : Common ground (external power ground)

Dcom : Common-cathode of clamp diodes (Must be con-

nected to external power V+ when controlling inductive

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