Lenze DDS v2.3 Manuel d'utilisateur Page 278
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- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Drive PLC Developer Studio
IEC 61131-3 Operators
12-8
l
DDS EN 2.3
12.4 Selection operators
All selection operations can also be carried out on variables.
For better understanding, the examples below use constants as operands.
12.4.1 SEL
Binary selection
OUT := SEL(G, IN0, IN1)
means:
IF G THEN
OUT:=IN1;
ELSE
OUT:=IN0;
END_IF
IN0, IN1 and OUT canbeofanytype,G must be of type BOOL.
The result of the selection is
• IN0 if G is FALSE,
• IN1 if G is TRUE.
Examples
IL ST FBD
LD TRUE
SEL 3,4 (*IN0=3, IN1=4*)
ST Var1 (*Result=4 *)
LD FALSE
SEL 3,4
ST Var1 (*Result=3*)
Var1:=SEL(TRUE,3,4);
(*Result Var1=4*)
Tip!
Processing is as follows for runtime optimization.
An expression attached to the input side of IN0 will be computed only if G = FALSE.
An expression attached to the input side of IN1 will be computed only if G = TRUE.
Simulation will compute all branches.
12.4.2 MAX
Maximum function
Returns the greater of two values.
OUT := MAX(IN0, IN1)
IN0, IN1 and OUT canbeofanytype.
Examples
IL ST FBD
LD 90
MAX 30
MAX 40
MAX 77
ST Var1 (* Var1 = 90 *)
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- Global Drive 1
- PLC Developer Studio 1
- Show/Hide Bookmarks 2
- Drive PLC Developer Studio 10
- WOpen to 11
- (^ 6-37) 13
- ST result 15
- Organization unit 19
- Write variable xy 22
- (^ 6-42) 22
- 3.1 Introduction 23
- Automation system settings 24
- Organization units 25
- New action 32
- 3.4 Visualization 37
- New visualization 37
- WOptions ... Keyboard: 66
- Category 66
- WLoad & save 66
- WUser in formation 67
- Variable declaration 68
- WDesktop 69
- WColours 70
- WDirectories 71
- (^ 15-1) 73
- (^ 15-2) 73
- WPasswords 74
- WSymbol configuration 75
- Symbol configuration 75
- Setobjectattribute 75
- WGDC Device Description 77
- Standard language 77
- Language Two 77
- More details and information 78
- 6.1 Managing projects 79
- Compile Information 81
- Directories 81
- Details: Local gateway 83
- Printer setup 84
- Copy project 95
- Global replace 97
- User group passwords 99
- Exception handling 100
- Object Organizer 102
- WNew folder Keyboard: 103
- WExpand node Keyboard: 103
- Name, enter 108
- 6.3 Working in online mode 110
- Communication parameters 117
- WLog Keyboard: 120
- WLoad Keyboard: 121
- WSave Keyboard: 121
- WDelete Keyboard: <Del> 125
- Help Manager 128
- WMacros Keyboard: 131
- (^ 7-18) 132
- Declarations 133
- Function block instance 134
- Input / output variable 134
- (^ 13-1) 135
- (^ 13-4) 136
- WTypes Keyboard: 137
- TRUE, FALSE) 137
- Build options 141
- Edit step attributes 141
- WOperator Keyboard: 144
- WOperand Keyboard: 144
- WFunction Keyboard: 144
- WFunction block Keyboard: 145
- Monitoring options 146
- (^LEERER MERKER) 147
- WOptions Keyboard: 148
- Maximum comment size 148
- Minimum comment size 148
- WNetwork (after) 148
- WNetwork (before) 148
- WOutput Keyboard: 155
- WSet/Reset Keyboard: 155
- WJump Keyboard: 160
- WReturn Keyboard: 160
- WOperator with EN Keyboard: 161
- WPaste after Keyboard: 161
- WPaste above Keyboard: 161
- Continuous Function Chart 164
- Load & Save 164
- WProperties Keyboard: 169
- Edit parameters 169
- WConnector Keyboard: 170
- WOrderWDisplay Keyboard: 173
- WArrange topologically 173
- WOrderWTo the end Keyboard: 175
- WStep into macro Keyboard: 176
- WExpand macro Keyboard: 176
- WOpen instance Keyboard: 177
- Colours 177
- WTransition jump Keyboard: 180
- WAdd entry action Keyboard: 180
- WAdd exit action Keyboard: 181
- WInsert after Keyboard: 181
- Time limit overview 183
- WAssociate action Keyboard: 184
- WUse I EC steps Keyboard: 184
- WAdd action Keyboard: 185
- Organizer 185
- Global variables 192
- Code initialization values 194
- WAdd new object Keyboard: 199
- ±16384 ®±100%, f o r example 200
- Instance Parameter Manager 201
- (^ 8-12) 201
- Enter the new object 202
- Instance 202
- Parameter Manager 202
- (^ 8-11) 208
- Example: 208
- Add scale function 209
- Process image 211
- (^ 8-29) 212
- PLC Configuration 213
- (^ 8-25) 213
- PLC configuration 214
- WInsert element Keyboard: 214
- WAdd subelement Keyboard: 214
- WReplace element Keyboard: 215
- WConvert Keyboard: 215
- Basic parameters 216
- WInsert task 223
- WAdd task 223
- Task properties 223
- WNew watch list Keyboard: 226
- WSave watch list Keyboard: 226
- WLoad watch list Keyboard: 227
- WWrite Receipt Keyboard: 227
- WRead Receipt Keyboard: 227
- (^ 6-12) 235
- WRectangle Keyboard: 236
- WEllips e Keyboard: 237
- WPolyline Keyboard: 237
- WCur v e Keyboard: 237
- WPlaceholder list Keyboard: 243
- WSettings Keyboard: 244
- Visualization settings 244
- Motion relative 247
- WVariables available for: all 247
- Variab les 247
- WInput available for: all 250
- Variables 251
- Replace placeholder 253
- Placeholder list 253
- A:= ROR (IN, N) 277
- Assignment operator 283
- System variable 288
- PROGRAM a 320
- VAR_GLOBAL 320
- (^ 8-18) 321
- 15.6 Glossary 333
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