Technical data

Index
Programming with STEP 7
688 Manual, 05/2010, A5E02789666-01
D
Data Block
Shared 96
Structure 96
Data block (DB) 72
Data Block (DB) 585
Instance Data Blocks 93
Retentive 585
Data Block Register 582
Data blocks 277
Assigning parameters 277
Data view 269
Declaration view 268
Data Blocks 267
Basic Information 267
Editing Data Values in the Data View 275
Resetting Data Values to their Initial Values 275
Saving 276
Data Blocks (DB)
Instance Data Blocks 90
Data Carrier 182
Data exchange
in different operating modes 569
Data Record
Accessing 677, 679
Reading 676, 677
Writing 676
Data storage 182
Data Type 226
DINT 590
DWORD 595
INT 590
S5TIME 596
User-Defined 226
WORD 595
Data Types 588, 619, 620
ARRAY 597
BOOL 589
BYTE 589
Complex 597
DATE_AND_TIME 597, 598
Description 589
Double Word (DWORD) 589
Elementary 589
FB
SFB 90, 597
REAL 591
STRING 597
STRUCT 597
UDT 597
User Defined 597
Word (WORD) 589
Data Values 275
Editing in the Data View of Data Blocks 275
Resetting to their Initial Values 275
Data view of data blocks 269
DATE_AND_TIME 597, 598, 599, 600
Daylight saving time 409
DB 96, 291, 307, 308
Deactivating
Time-of-Day Interrupt 100
Debugging 296
in STL Files 296
Declaration view of data blocks 268
Declaring Local Variables 648
OB for the Sample Industrial Blending Process 648
Declaring Parameters 646
FC for the Sample Industrial Blending Process 646
DeclaringLocal Data 622
Default Settings for the LAD/STL/FBD Program Editor
242
Defective
CPU Operating Mode 557
Defining 206
Symbols when Programming 206
Defining Logic Blocks 639
Delayed Processing of Interrupts and Asynchronous
Errors 673
Example 673
Delaying
Start Events 111
Deleting
S7 Blocks on the Programmable Controller 437
STEP 7 Objects 136
Deleting Associated Values 365
Describing the Individual Functional Areas 62
Describing the Operator Console
Example of Industrial Blending Process 68
Describing the Required Operator Displays and Controls
68
Detailed comparison 233
Detectable errors 503
Diagnosing Hardware
Detailed Diagnostic View 484
Quick View 481
Diagnostic Buffer 583, 584
Contents 500, 583, 584
Definition 583
Displaying 584
Evaluating 583
Reading 495
Diagnostic Data on Modules 498
Diagnostic Event 500, 583
Diagnostic Functions 500
Diagnostic Interrupt (OB82) 514
Diagnostic Interrupt Organization Block 514, 516
Diagnostic Message 499
Diagnostic status
PROFIBUS 519, 521, 522
PROFINET 525
Diagnostic Status Data 497
Diagnostic status DB 530
Diagnostics 477, 478
Diagnostics Symbols in the Online View 479
Dialog Boxes 135
Differences Between Project-Oriented and CPU-Oriented
Assignment of Message Numbers 345
Differences Between Saving and Downloading Blocks
417