Allen-Bradley 1738-ADNX Manuale Utente Scaricare il pdf (Pagina 78)

Publication 1768-UM001C-EN-P - November 2007

78 Develop Applications

Determining if Communication has Timed Out with Any Device

If communication times out with at least one device (module) in the I/O

configuration of the controller, the I/O status indicator on the front of the

controller flashes green.

• The GSV instruction gets the status of the I/O status indicator and

stores it in the I_O_LED tag

• If the I_O_LED tag equals 2, the controller has lost communication

with at least one device

where:

I_O_LED is a DINT tag that stores the status of the I/O status

indicator on the front of the controller.

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 131 132

1768 CompactLogix 1
Controllers 1
Important User Information 2
Summary of Changes 3
Updated Information 3
Summary of Changes 4 4
Table of Contents 5
6 Table of Contents 6
Table of Contents 7 7
8 Table of Contents 8
Purpose of This Manual 9
Who Should Use This 9
Publication 9
Preface 10 10
1768 CompactLogix Overview 11
Communication 12
Complex CompactLogix System 12
IMPORTANT 12
Designing a System 13
Connect a Controller Via 16
Configure the Serial Driver 17
Yes Click OK 18
Select the Controller Path 19
Set the IP Address via a 20
Serial Port 20
Communicate over Networks 21
EtherNet/IP Network 22
1768-EWEB Web Server Module 26
ControlNet Network 27
DeviceNet Network 30
POWER SUPP 33
Serial Network 34
Communicate with DF1 Devices 35
DH-485 Network 40
Connection Overview 45
Producing and Consuming 46
(interlock) Data 46
Sending and Receiving 47
Messages 47
Calculating Connection Use 48
Connections Example 49
Place 1768 and 1769 Modules 51
1768 Power Supply 52
1769 Module Placement 53
Configure and Monitor I/O 55
Configuring I/O 56
I/O Connections 58
Configure Distributed I/O 59
Configuring Distributed I/O 60
Address I/O Data 61
Determine When Data 62
Monitor I/O Modules 63
Reconfigure an I/O Module 65
If the module Then 67
Develop Applications 69
Developing Programs 70
Defining Tasks 71
Defining Programs 72
Defining Routines 72
Sample Controller Projects 73
Organizing Tags 74
Selecting a Programming 75
Language 75
Monitoring Controller 77
Monitoring Connections 77
I/O Module 79
Select a System 80
Overhead Percentage 80
Develop Motion Applications 85
Make the Controller the 86
Master Clock 86
Add the Motion Modules 87
Add SERCOS Interface 88
Set Up Each SERCOS 90
Interface Module 90
Add the Motion Group 91
8. Click Finish 93
Add Your Axes 94
Set Up Each Axis 95
Check the Wiring of Each 98
Tune Each Axis 100
Obtain Axis Information 101
Programming Motion 102
Additional Resources 104
Configure PhaseManager 105
PSC POVR PCLF PRNP PATT 106
PCMD PFL PXRQ PPD PDET 106
PhaseManager Overview 106
State Model Overview 107
How Equipment Changes States 108
Comparing PhaseManager 109
Minimum System 110
Requirements 110
Equipment Phase 110
Instructions 110
Maintain Nonvolatile Memory 111
Preventing a Major Fault 112
During a Load 112
Using a CompactFlash 112
Appendix 113
Introduction 113
Status Indicators 117
118 Status Indicators 118
Status Indicators 119 119
120 Status Indicators 120
Status Indicators 121 121
RS-232 Serial Port Status 122
Indicators 122
Faceplate Pushbutton 122
Numerics 123
124 Index 124
Index 125 125
126 Index 126
Index 127 127
128 Index 128
How Are We Doing? 129
BUSINESS REPLY MAIL 130
Rockwell Automation 132

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