Omega-engineering OME-A8111 Manual do Utilizador descarregar pdf (Página 21)

2.5 Digital I/O

The OME-A-8111 provides 16 digital input channels and 16 digital output

channels. All levels are TTL compatible. The connections diagram and block

diagram are given below:

Read

D0...D7

Base+D

Base+E

D0...D7

D8...D15

1...8

9...16

Output Latch Register

CN3

17...18

DGND

TTL

16-Channel Isolated

Input Board

(Option)

OME-A-8111

Read

D0...D7

Base+6

Base+7

D0...D7

D8...D15

1...8

9...16

Input Buffer Register

CN2

17...18

DGND

OME-DB-16P

DGND

TTL

OME-A-8111

OME-DB-16

Strobe 20

Rea

16-Channel Isolated

Input Board

(Option)

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 19

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 33 34

User’s Guide 1
OME-A-8111 3
Table of Contents 4
1. Introduction 6
1.1 General Description 6
1.2 Features 6
1.3 Specifications 7
1.3.1 Power Consumption 7
1.3.2 Analog Inputs 7
1.3.3 A/D Converter 7
1.3.4 DA Converter 8
1.3.5 Digital I/O 8
1.3.6 Interrupt Channel 8
1.3.8 Applications 9
1.4 Product Check List 9
2. Hardware Configuration 10
SW1 : BASE ADDRESS 11
2.3 Jumper Setting 12
Selection 12
2.4 I/O Register Address 13
2.4.1 The 8254 Counter 14
2.5 Digital I/O 21
2.6 8254 Timer/Counter 22
2.7 A/D Conversion 23
2.7.1 A/D conversion flow 24
2.7.3 A/D Transfer Modes 25
2.8 D/A Conversion 26
Frame Ground 27
2.10 Pin Assignment 28
2.11 Daughter Board 30
VR3 A/D Offset adjustment 31
3.2 D/A Calibration Steps 32
3.3 A/D Calibration Steps 32
3.4 DI/O Testing 32
WARRANTY/DISCLAIMER 33
RETURN REQUESTS/INQUIRIES 33
Shop online at www.omega.com 34

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