Rockwell-automation 1788-FFCT NI-FBUS Configurator User Manual Manual do Utilizador descarregar pdf (Página 15)

Publication 1788-UM052B-EN-P - April 2002

Fieldbus Overview 1-7

Even if loops are running at different rates, they can send each other

data through linkages. Figure 1.7 shows an example of a linkage

between two loops. All loops on a link run within one macrocycle. A

macrocycle is the least common multiple of all the loop times on a

given link. For example, the macrocycle in Figure 1.7 is 1 second.

Figure 1.7 Linkage Between Two Loops

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NI-FBUS 1
Configurator 1
Important User Information 3
Rockwell Automation 4
Table of Contents 5
Conventions Used in This 7
Related Documentation 7
Preface x 8
Fieldbus Overview 9
1-2 Fieldbus Overview 10
Identifying Devices 11
Blocks and Parameters 12
Linkages 13
Multiple Loops 14
Fieldbus Overview 1-7 15
Schedules 16
Configuring a Fieldbus System 17
NI-FBUS Configurator Overview 21
NI-FBUS Configurator 22
Project Window 23
Conventions 24
State Icons 25
Help Window 27
Status Window 27
Download Tab 28
Errors Tab 28
Starting the NI-FBUS 29
Configuring Online 30
Importing 32
Device Description Files 32
Setting Device or Block 33
Setting Device Addresses 34
Resetting a Device 36
Formulating a Control 36
Strategy 36
Function Blocks 38
Adding Function Blocks 38
Connecting Blocks 40
Using Pre-Wired Templates 41
Figure 4.7 Example Template 42
Defining Multiple Loops 43
Figure 4.10 Loop Structure 45
Viewing and Editing 47
Function Block Parameters 47
Block Window Icons 48
Block Window Toolbar 48
Tabs of the Block Window 49
Adding Tabs 50
Removing Tabs 50
Customizing Parameters 50
Editing Block Parameters 51
Manually 52
Automatically 52
Using Menus and Methods 53
Configuring Alarms 53
Configuring Trends 54
Viewing and Editing a 55
Schedule 55
Schedule Window Toolbar 56
Multiple Loop Representation 57
Setting Network 58
Parameters 58
Downloading a 59
Configuration 59
Monitoring a 60
Function Block Application 60
Verifying a Configuration 61
Comparing Two Configurations 62
Viewing and Editing a Log 63
Replacing Devices 63
Setting Preferences 64
Changing the Software Key 65
Printing 66
Error Messages and Warnings 67
Warnings 70
Appendix 71
Troubleshooting 72
Device Problems 73
Mode Transition 74
Reading and Writing Errors 75
Common Questions 76
Glossary 77
OUNDATION Fieldbus 78
I-2 80
I-4 82
How Are We Doing? 83
BUSINESS REPLY MAIL 84

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