Rockwell-automation FactoryTalk View Site Edition Users Guide Manuale Utente Pagina 549
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20 • CREATING EXPRESSIONS
20–3
• • • • •
20 • Placeholder
Expression components
You can build an expression using any of the following components:
Tag values (or tag placeholders)
Constant values
Mathematical, relational, logical, and bitwise operators
Built-in functions
If-then-else logic
To select components, click the following buttons in the Expression box or editor.
To open this list Click
If-then-else operators
Logical operators
Relational operators
Arithmetic operators
Bitwise operators
Built-in functions
Tags (in the Tag Browser)
FactoryTalk alarms (in the Alarm
Source Browser)
Click *** to open the
Expression editor.
If the button has no
caption, the property
does not allow an
expression.
- View Site Edition 1
- Contacting Rockwell 2
- August 2014 2
- Contents 3
- • • • • • 10
- FactoryTalk Services Platform 27
- FactoryTalk View SE features 30
- FactoryTalk View 32
- About FactoryTalk View Studio 41
- Menu bar 44
- Toolbars 44
- Explorer 45
- Workspace 45
- Application tab 45
- Communications tab 46
- Diagnostics List 46
- Status bar 47
- Workbook mode 47
- Moving the Explorer window 49
- Opening and closing folders 50
- Opening component editors 50
- Naming components 54
- Browsing lists and components 56
- Supplying tag names 56
- Building expressions 57
- Selecting a printer 58
- Printing at run time 58
- Planning an application 59
- Planning the network layout 60
- Planning communications 63
- Traditional HMI tag alarms 66
- Deciding when to use HMI tags 66
- Planning how to use trends 71
- About FactoryTalk Directory 75
- Local station applications 77
- Running network applications 78
- Setting up security 83
- About the All Users account 104
- Creating group accounts 106
- Working with 123
- About FactoryTalk systems 125
- FactoryTalk Network Directory 126
- FactoryTalk Security 126
- HMI projects 127
- HMI servers 127
- HMI clients 128
- System availability 131
- Language switching 132
- Adding and deleting areas 133
- Adding an HMI server 133
- Adding a data server 135
- Running multiple HMI servers 136
- Deleting HMI servers 142
- Relative references 149
- FactoryTalk Local Directory 163
- Setting up communications 171
- Setting up general properties 175
- Deleting an OPC data server 183
- Working with tags 185
- Setting up data server tags 188
- Setting up HMI tags 188
- Logging tag values 189
- Observing tag-related limits 189
- About tag references 190
- Absolute references 190
- The home area 191
- Parts of the Tag Browser 192
- Viewing tags in folders 193
- Showing server names 193
- Finding tags in the home area 194
- Finding a tag or text string 194
- To find tags with Tag Browser 196
- Showing a tag’s properties 197
- Filtering tags 198
- Browsing for offline tags 199
- Working with HMI tags 200
- HMI tag types 201
- Data sources for HMI tags 201
- Organizing HMI tags 202
- Naming HMI tags 202
- Grouping HMI tags in folders 203
- Viewing tag statistics 203
- Parts of the Tags editor 203
- Accept and Discard buttons 204
- Form and spreadsheet 205
- Query box 205
- Folder hierarchy 205
- Importing and exporting tags 209
- Setting up HMI tag alarms 213
- HMI tag alarm features 214
- Key HMI tag alarms concepts 215
- Alarm states for digital tags 218
- Alarm severity 219
- Alarm messages 219
- Alarm log file 219
- HMI tag alarm displays 220
- Alarm acknowledgment 222
- Alarm suppression 223
- Acknowledge bit 225
- Handshake bit 225
- Setting up alarm monitoring 227
- Setting up alarm severities 228
- Setting up alarm messages 229
- Alarm log file names 242
- Suppressing alarm logging 243
- Suppressing alarm printing 244
- Inserting headings 246
- Choosing fonts 247
- Selecting buttons 248
- Choosing the data to show 249
- Setting up FactoryTalk alarms 257
- Alarms and events 262
- Alarm servers 262
- Level alarms 263
- Deviation alarms 265
- Deviation-High 266
- Constant Target 266
- Deviation-Low 266
- Alarm priority and severity 267
- Alarm class 268
- Alarm states 269
- Alarm tags 269
- Alarm status tags 270
- Viewing all tag-based alarms 283
- Specifying tag update rates 286
- Acknowledging alarms 296
- Shelve or unshelve an alarm 299
- Viewing alarm details 302
- Disabling and enabling alarms 304
- Setting up language switching 317
- Export file formats 328
- File name and format 333
- File schema 334
- Server status monitoring 345
- Disconnected operation 345
- Redundant application servers 345
- Modifying HMI tag properties 367
- About network glitches 376
- Logging system activity 379
- Destinations 380
- Message routing 380
- Message categories 381
- Setting up message routing 383
- Logging to a central database 383
- Creating graphic displays 389
- About global object displays 390
- Parts of the Graphics editor 391
- Zooming in and out 395
- Setting up a display grid 396
- Using the toolbars 396
- Selecting objects 397
- Copying objects 398
- Duplicating objects 399
- Arranging objects 401
- Flipping objects 405
- Rotating objects 406
- Grouping objects 407
- Ungrouping objects 407
- Modifying grouped objects 408
- Applying colors 409
- Changing line properties 410
- Naming graphic objects 411
- Testing graphic displays 415
- Location of library files 419
- When to use a bitmap 421
- Creating a tag placeholder 423
- Closing docked displays 442
- Printing displays at run time 442
- Creating graphic objects 443
- About global objects 444
- Drawing a rectangle or square 446
- Drawing a rounded rectangle 446
- Drawing a polyline or polygon 447
- Drawing an ellipse or circle 447
- Drawing an arc or wedge 448
- Creating text objects 449
- Creating a panel 450
- Specifying tag names 451
- Creating button push buttons 454
- Creating latched push buttons 458
- Creating ramp push buttons 460
- Creating symbols 471
- Creating list indicators 471
- Using gauges to show limits 471
- Creating gauges 473
- Creating bar graphs 473
- Creating scales 473
- Creating arrows 476
- Creating tag labels 477
- Setting up local messages 478
- Creating a recipe object 480
- Using keys to scroll the list 484
- Setting the Value tag 485
- Creating global objects 491
- Creating reference objects 492
- LinkAnimation 494
- LinkConnections 495
- LinkSize 495
- LinkToolTipText 495
- LinkBaseObject 496
- Working with OLE objects 497
- Creating OLE objects 497
- Converting OLE objects 497
- Working with ActiveX objects 498
- Attributes of ActiveX objects 498
- Creating ActiveX objects 499
- Working with Symbol Factory 500
- To open Symbol Factory: 500
- To select a graphic: 501
- Manipulating the graphic: 501
- Creating signature buttons 503
- Animating graphic objects 505
- Linking animation to actions 507
- Defining the range of motion 508
- Testing animation 510
- Showing and hiding objects 512
- Changing an object’s color 512
- Setting up touch zones 518
- Creating a horizontal slider 518
- Creating a vertical slider 518
- Animating OLE verbs 519
- How tab index numbers work 520
- Creating a tab sequence 521
- Changing index numbers 522
- Setting up object keys 522
- Setting up display keys 524
- Animating ActiveX objects 527
- Setting up navigation 533
- Reducing display call-up time 538
- Precedence and the F1 key 539
- Keyboard shortcuts 540
- About navigation buttons 542
- How navigation buttons work 543
- Creating a navigation button 543
- Creating expressions 547
- Expression components 549
- Formatting expressions 550
- Arithmetic operators 552
- Relational operators 553
- Logical operators 553
- Bitwise operators 554
- Evaluation order of operators 555
- Math functions 557
- File functions 558
- Time functions 559
- Tag functions 561
- Security functions 563
- Language function 564
- FactoryTalk alarm functions 564
- Nested if-then-else 566
- Creating embedded variables 569
- Inserting embedded variables 570
- Numeric embedded variables 577
- String embedded variables 577
- Setting up data logging 579
- Data log storage formats 580
- Creating data log models 583
- Specifying the storage format 584
- Setting up log paths 585
- Specifying when to log data 586
- Setting up switching options 589
- Logging on demand 591
- Combining logging 592
- (32-bit operating systems) 593
- (64-bit operating systems) 593
- Ways to start data logging 594
- Ways to stop data logging 595
- Setting up trends 597
- Creating trend objects 598
- Setting up trend properties 600
- Testing a trend 601
- The parts of a trend 601
- Chart title 602
- X-axis legend 603
- Y-axis legend 603
- Pen icons 605
- Pen markers 605
- Value Bar 606
- Trend chart styles 606
- The Standard chart style 607
- The XY Plot chart style 607
- Isolated graphing 608
- Showing a line legend 612
- Using shading to compare pens 612
- Using trend templates 617
- Saving pen attribute data 617
- Loading trend templates 618
- Selecting pens at run time 621
- Zooming the trend chart 625
- Panning the trend chart 625
- Using the arrow keys 626
- Printing the trend chart 626
- Using overlays at run time 626
- Fixing run-time errors 627
- Adding logic and control 629
- How to use derived tags 631
- Parts of the Events editor 635
- Creating an events component 637
- Creating and using macros 640
- Macro syntax 640
- Nesting macros 643
- Running macros 643
- Creating client keys 644
- Running client key components 645
- FactoryTalk View commands 647
- Where commands run 649
- Important guidelines 654
- Running and building commands 654
- HMI tags 657
- Syntax for DDE addresses 659
- Scanning for new tag values 659
- C • Placeholder 661
- Summary of basic steps 662
- About procedures 662
- How VBA code runs 663
- FactoryTalk View SE Client 664
- Viewing the objects 667
- Finding information about VBA 668
- About XML 669
- Modifying exported XML files 670
- Saving XML files in Notepad 670
- Testing XML files 670
- Importing XML files 671
- Error log file 671
- See On Active macro 675
- See FactoryTalk Diagnostics 675
- See ActiveX objects 675
- See trends 676
- See language switching 677
- See system availability 677
- See also global objects 677
- See HMI tag alarms, deadband 677
- See DDE communications 678
- See animation 678
- See graphic displays 679
- See Graphics editor 679
- See network applications 679
- See also activation 680
- See also Diagnostics List 681
- See Diagnostics Viewer 681
- See HMI servers 682
- See also system availability 685
- See also advanced objects 688
- See also key list 688
- See also special keys 688
- See data logging, paths 689
- See also global objects 691
- See shortcut keys 691
- See FactoryTalk Security 691
- See security codes 692
- See also FactoryTalk Security 692
- See local applications 693
- See On standby macro 693
- See HMI tags 694
- See VBA IDE 696
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