
- •Important Comments
- •Legal Principles
- •Copyright
- •Personnel Qualification
- •Intended Use
- •Symbols
- •Font Conventions
- •Number Notation
- •Scope
- •Abbreviations
- •Scope of Delivery
- •System Configuration
- •Installation
- •Uninstall
- •Start
- •Important Informations
- •WAGO-I/O-PRO 32 V2.2 Overview
- •What is WAGO-I/O-PRO 32
- •Overview of WAGO-I/O-PRO 32 Functions
- •How is a project structured?
- •How do I set up my project?
- •How can I test my project?
- •Debugging
- •Additional Online Functions
- •Additional WAGO-I/O-PRO 32 Features
- •Summary
- •Project Components
- •Project
- •POU (Program Organization Unit)
- •Function
- •Function Block
- •Function Block Instances
- •Calling a function block
- •Program
- •Action
- •Resources
- •Libraries
- •Data types
- •Visualization
- •Languages
- •Instruction List (IL)
- •Modifiers and operators in IL
- •Structured Text (ST)
- •Expressions
- •Valuation of expressions
- •Assignment operator
- •Calling function blocks in ST
- •RETURN instruction
- •IF instruction
- •CASE instruction
- •FOR loop
- •WHILE loop
- •REPEAT loop
- •EXIT instruction
- •Sequential Function Chart (SFC)
- •Step
- •Action
- •Entry or exit action
- •Active step
- •IEC step
- •Qualifier
- •Implicit variables in SFC
- •SFC Flags
- •Alternative branch
- •Parallel branch
- •Jump
- •Function Block Diagram (FBD)
- •The Continuous Function Chart Editor (CFC)
- •Ladder Diagram (LD)
- •Contact
- •Coil
- •Function blocks in the Ladder Diagram
- •Set/Reset coils
- •Debugging, Online Functions
- •Sampling Trace
- •Debugging
- •Breakpoint
- •Single step
- •Single Cycle
- •Change values online
- •Monitoring
- •Simulation
- •The Standard
- •Programming Example
- •Controlling a Traffic Signal Unit
- •Create POU
- •What does TRAFFICSIGNAL do?
- •What does WAIT do?
- •What does SEQUENCE do?
- •What does PLC_PRG do?
- •"TRAFFICSIGNAL" declaration
- •"TRAFFICSIGNAL" body
- •Connecting the standard.lib
- •"WAIT" declaration
- •"WAIT" body
- •"SEQUENCE" first expansion level
- •Create a SFC diagram
- •Actions and transition conditions
- •"SEQUENCE" second expansion level
- •The result
- •TRAFFICSIGNAL simulation
- •Visualizing a Traffic Signal Unit
- •Creating a new visualization
- •Insert element in Visualization
- •The other traffic lights
- •The TRAFFICSIGNAL case
- •The second traffic signal
- •The ON switch
- •Font in the visualization
- •Components of WAGO-I/O-PRO 32
- •The Main Window
- •Menu bar
- •Tool bar
- •Object Organizer
- •Screen divider
- •Work space
- •Message window
- •Status bar
- •Context Menu
- •Options
- •'Project' 'Options'
- •Options for Load & Save
- •Options for User information
- •Options for Editor
- •Autodeclaration
- •Autoformat
- •Declarations as tables
- •Print margins
- •Comment
- •Tab-Width
- •Font
- •Mark
- •Bitvalues
- •Options for the Desktop
- •Options for Colors
- •Options for Directories
- •Options for Log
- •Options for Build
- •Passwords
- •'Sourcedownload'
- •Options for 'Symbol Configuration'
- •Options for 'Macros'
- •Managing Projects
- •'File' 'New'
- •'File' 'Open'
- •'File' 'Close'
- •'File' 'Save'
- •'File' 'Save as'
- •'File' 'Save/Mail Archive'
- •'File' 'Print'
- •'File' 'Printer setup'
- •'File' 'Exit'
- •'Project' 'Build'
- •'Project' 'Rebuild all'
- •'Project' 'Clean all'
- •'Project' 'Translate into another language'
- •Create translation file
- •Editing of the translation file
- •Translate Project (into another Language)
- •'Project' 'Document'
- •'Project' 'Export'
- •'Project' 'Import'
- •'Project' 'Merge'
- •'Project' 'Compare'
- •'Extras' 'Next difference'
- •'Extras' 'Previous difference'
- •'Extras' 'Accept change'
- •'Extras' 'Accept changed item'
- •'Extras' 'Accept properties'
- •'Extras' 'Accept access rights'
- •'Project' 'Project info'
- •'Project' 'Global Search'
- •'Project' 'Global replace'
- •'Project' 'Check'
- •Unused Variables
- •Overlapping memory areas
- •Access conflict
- •Multiple writes to output
- •User groups
- •'Project' 'Passwords for user groups'
- •Managing Objects in a Project
- •Object
- •Folder
- •'New Folder'
- •'Expand nodes' 'Collapse nodes'
- •'Project' 'Object Delete'
- •'Project' 'Object Add'
- •'Project' 'Object Rename'
- •'Project' 'Object Convert'
- •'Project' 'Object Copy'
- •'Project' 'Object Open'
- •'Project' 'Object Access rights'
- •'Project' 'Object properties'
- •'Project' 'Add Action'
- •'Project' 'Open Instance'
- •'Project' 'Show Call Tree'
- •'Projekt' 'Show cross reference'
- •General Editing Functions
- •'Edit' 'Undo'
- •'Edit' 'Redo'
- •'Edit' 'Cut'
- •'Edit' 'Copy'
- •'Edit' 'Paste'
- •'Edit' 'Delete"
- •'Edit' 'Find'
- •'Edit' 'Find next'
- •'Edit' 'Replace'
- •'Edit' 'Input Assistant'
- •Unstructured Display
- •Stuctured Display
- •'Edit''Declare Variable'
- •'Edit' 'Next error'"
- •'Edit' 'Previous error'"
- •'Edit' 'Macros'
- •General Online Functions
- •'Online-Change' Functionality
- •'Online' 'Login'
- •If the system reports
- •'Online' 'Logout'
- •'Online' 'Download'
- •'Online' 'Run'
- •'Online' 'Stop'
- •'Online' 'Reset'
- •'Online' 'Reset (cold)'
- •'Online' 'Reset (original)'
- •'Online' 'Toggle Breakpoint'
- •'Online' 'Breakpoint Dialog Box'
- •'Online' 'Step over'
- •'Online' 'Step in'
- •'Online' 'Single Cycle'
- •'Online' 'Write values'
- •'Online' 'Force values'
- •'Online' 'Release force'
- •'Online' 'Write/Force' Dialog'
- •'Online' 'Show Call Stack'
- •'Online' 'Flow Control'"
- •'Online' 'Simulation'
- •'Online' 'Communication Parameters'
- •Principle of a gateway system
- •What the communications parameters dialog on the local PC shows
- •Setting up the desired gateway server and channel
- •Setting up a new channel for the local gateway server
- •Tips for editing the parameters in the communications parameters dialogue
- •Quick check in the event of unsuccessful connection attempt to the gateway
- •'Online' 'Sourcecode download'
- •'Online' 'Create bootproject'
- •'Online' 'Write file to controller'
- •'Online' 'Load file from controller'
- •'Window' 'Log'
- •Menu Log
- •Storing the project log
- •Window set up
- •'Window' 'Tile Horizontal'
- •'Window' 'Tile Vertical'
- •'Window' 'Cascade'
- •'Window' 'Arrange Symbols'
- •'Window' 'Close All'
- •'Window' 'Messages'
- •Help when you need it
- •'Help' 'Contents and Index'
- •Main Help Window
- •Index Window
- •Context Sensitive Help
- •The Editors
- •Print margins
- •Comment
- •Zoom to POU
- •Open instance
- •Declaration Editor
- •Declaration Part
- •Input Variable
- •Output Variable
- •Input and Output Variables
- •Local Variables
- •Remanent variables
- •Constants, Typed Literals
- •External variables
- •Keywords
- •Variables declaration
- •AT Declaration
- •'Insert' 'Declarations keywords'
- •'Insert' 'Type'
- •Syntax Coloring
- •Shortcut Mode
- •Autodeclaration
- •Line Numbers in the Declaration Editor
- •Declarations as tables
- •'Insert' 'New Declaration'
- •Pragma instructiion
- •Declaration Editors in Online Mode
- •The Text Editors
- •'Insert''Operators'in text editors
- •'Insert''Operand'in text editors
- •'Insert''Function' in text editors
- •'Insert''Function Block' in text editors
- •Calling POUs with output parameters in text editors
- •The text editors in Online mode
- •'Extras' 'Monitoring Options'
- •Breakpoint Positions in Text Editor
- •How do you set a breakpoint?
- •Deleting Breakpoints
- •What happens at a breakpoint?
- •Line Number of the Text Editor
- •The Instruction List Editor
- •IL in Online mode
- •The Editor for Structured Text
- •The Graphic Editors
- •Zoom
- •Network
- •Label
- •Network Comments,'Extras' 'Options'
- •'Insert' 'Network (after)' or 'Insert' "Network (before)"
- •The network editors in the online mode
- •The Function Block Diagram Editor
- •Cursor positions in FBD
- •How to set the cursor in FBD
- •'Insert' 'Assign' in FBD
- •'Insert' 'Jump' in FBD
- •'Insert' 'Return' in FBD
- •'Insert' 'Box' in FBD
- •'Insert' 'Input'
- •'Insert' 'Output'
- •'Extras' 'Negate
- •'Extras' 'Set/Reset'
- •Cutting, Copying, Pasting, and Deleting in FBD
- •The Function Block Diagram in the Online Mode
- •The Ladder Editor
- •Cursor Positions in the LD Editors
- •'Insert' 'Contact'in LD
- •'Insert' 'Parallel Contact'
- •'Insert' 'Function Block in LD'
- •'Insert''Coil' in LD
- •POUs with EN Inputs
- •'Insert' 'Box with EN in LD'
- •'Insert' 'Function Block with EN'
- •'Insert' 'Function with EN'
- •'Insert' 'Insert at blocks in LD
- •'Insert' 'Jump' in LD
- •'Insert' 'Return' in LD
- •'Extras' 'Paste after' in LD
- •'Extras' 'Paste below'in LD
- •'Extras' 'Paste above' in LD
- •'Extras' 'Negate' in LD
- •'Extras' 'Set/Reset' in LD
- •The Ladder Diagram in the Online Mode
- •The Sequential Function Chart Editor
- •Marking Blocks in the SFC
- •'Insert' 'Step Transition (before)'
- •'Insert' 'Step Transition (after)'
- •'Insert' 'Alternative Branch (right)'
- •'Insert' 'Alternative Branch (left)'
- •'Insert' "Parallel Branch (right)"
- •'Insert' 'Parallel Branch (left)'
- •'Insert' 'Jump'
- •'Insert' 'Transition-Jump'
- •'Extras' 'Paste Parallel Branch (right)'
- •'Extras' 'Add label to parallel branch'
- •Delete a label
- •'Extras' 'Paste after'
- •'Extras' 'Zoom Action/Transition'
- •'Extras' "Clear Action/Transition"
- •'Extras' 'Step Attributes'
- •'Extras' 'Time Overview'
- •'Extras' 'Options'
- •'Extras' 'Associate Action'
- •Sequential Function Chart in Online Mode
- •The Continuous Function Chart Editor (CFC)
- •Cursor positions in the CFC
- •'Insert' 'Box' in the CFC
- •‚Insert' ‚Input' in CFC
- •'Insert' 'Output'in CFC
- •'Insert' 'Jump'in CFC
- •'Insert' 'Label' in CFC
- •'Insert' 'Return' in CFC
- •'Insert' 'Comment' in CFC
- •'Insert' 'Input of box' in CFC
- •'Extras' 'Negate' in CFC
- •'Extras' 'Set/Reset' in CFC
- •'Extras' 'EN/ENO' in CFC
- •‚Extras' ‚Properties...' in CFC
- •Selecting elementsin CFC
- •Moving elementsin CFC
- •Copying elementsin CFC
- •Creating connections
- •Deleting connections
- •Changing connections
- •'Extras' 'Connection marker'
- •Insert inputs/outputs "on the fly"
- •Order of execution
- •'Extras' 'Order' 'Display'
- •'Extras' 'Order' 'Order topologically'
- •'Extras' 'Order' 'One forwards'
- •'Extras' 'Order' 'One backwards'
- •'Extras' 'Order' 'To the beginning'
- •'Extras' 'Order' 'To the end'
- •'Extras' 'Order' 'Order everything according to data flow''
- •'Extras' 'Create macro''
- •'Extras' 'Jump into Macro'
- •'Extras' 'Expand macro'
- •'Extras' 'Back one macro level', 'Extras' 'Back all macro level'
- •Feedback paths in CFC
- •CFC in Online mode
- •Overview of the Resources
- •Global Variables
- •Editing Global Variables
- •Several Variables Lists
- •Global Variables
- •Create a Global Variable List
- •Editing Global Variable Lists
- •Editing Remanent Global Variables Lists
- •Global Constants
- •Variable Configuration
- •‚Insert' 'All Instance Paths'
- •Document Frame
- •Document Frame
- •'Extras' 'Make Docuframe File'
- •'Extras' 'Link Docu File'
- •PLC Browser
- •PLC Configuration
- •PLC Selection
- •Task Configuration
- •Which task is being processed?
- •Working in the Task Configuration
- •'Insert' 'Insert Task' or 'Insert' 'Append Task'
- •'Insert' 'Insert Program Call' or 'Insert' 'Append Program Call'
- •'Extras' 'Edit Entry'
- •'Extras' 'Set Debug Task'
- •Sampling Trace
- •'Extras' 'Trace Configuration'
- •'Extra' 'Start Trace'
- •'Extra' 'Read Trace'
- •'Extra' 'Auto Read'
- •'Extra' 'Stop Trace'
- •Selection of the Variables to be Displayed
- •Display of the Sampling Trace
- •'Extras' 'Cursor Mode'
- •'Extras' 'Multi Channel'
- •'Extras' 'Show grid'
- •'Extras' 'Y Scaling'
- •'Extras' 'Stretch'
- •'Extras' 'Compress'
- •'Extras' 'Save Trace'
- •'Extras' 'Load Trace'
- •Watch and Receipt Manager
- •Watch and Receipt Manager
- •Watch and Receipt Manager in the Offline Mode
- •'Insert' 'New Watch List'
- •'Extras' 'Rename Watch List'
- •'Extras' 'Save Watch List'
- •'Extras' 'Load Watch List'
- •Watch and Receipt Manager in the Online Mode
- •'Extra' 'Monitoring Active'
- •'Extras' 'Write Receipt'
- •'Extras' 'Read Receipt'
- •Force values
- •Library Manager
- •Using the Library Manager
- •Standard Library
- •User-defined Libraries
- •'Insert' 'Additional Library'
- •Remove Library
- •Visualization
- •Visualization
- •Create Visualization
- •Visualization Elements, Insert
- •Visualization Elements, Insert
- •'Insert' 'Rectangle'
- •'Insert' 'Rounded Rectangle'
- •'Insert' 'Ellipse'
- •'Insert' 'Polygon'
- •'Insert' 'Line'
- •'Insert' 'Curve'
- •'Insert' 'Bitmap'
- •'Insert' 'Visualization'
- •'Insert' 'Button'
- •Working with Visualization Elements
- •Selecting Visualization Elements
- •Modifying Visualization Elements
- •Dragging Visualization Elements
- •Copying Visual Elements
- •Changing the Selection and Insert Mode
- •Status Bar in the Visualization
- •Visualization Elements, Configure
- •'Extras' 'Configure'
- •Placeholder
- •'Extras' 'Placeholder list'
- •Shape
- •Text
- •Line width
- •Colors
- •Motion absolute
- •Motion relative
- •Variables
- •Input
- •ToolTip
- •Bitmap
- •Visualization
- •Additional Visualization Element Functions
- •'Extras' 'Send to Front'
- •'Extras' 'Send to Back'
- •'Extras' 'Select Background Bitmap'
- •'Extras' 'Clear Background Bitmap'
- •'Extras' 'Align'
- •'Extras' 'Select All'
- •'Extras' 'Select Mode'
- •'Extras' 'Element list'
- •'Extras' 'Settings'
- •Operation over the keyboard - in online mode
- •'File' 'Print' in online mode
- •Visualizations in libraries
- •DDE Interface
- •DDE Communication with WAGO-I/O-PRO 32
- •Activating the DDE Interface
- •General Approach to Data
- •Which variables can be read?
- •Linking variables using WORD
- •Linking variables using EXCEL
- •Accessing variables with Intouch
- •Keyboard Commands
- •Use of Keyboard
- •Key Combinations
- •Data Types
- •Standard Data types
- •Data types
- •BOOL
- •Integer Data Types
- •REAL
- •STRING
- •Time Data Types
- •Defined Data Types
- •ARRAY
- •Function Checkbounds
- •Pointer
- •Enumeration
- •Structures
- •References
- •Subrange types
- •The IEC Operators
- •The IEC Operators
- •Arithmetic Operators
- •INDEXOF
- •SIZEOF
- •Bitstring Operators
- •Bit-Shift Operators
- •Selection Operators
- •LIMIT
- •Comparison Operators
- •Address Operators
- •Content Operator
- •Calling Operator
- •Type Conversion Functions
- •BOOL_TO Conversions
- •TO_BOOL Conversions
- •Conversion between Integral Number Types
- •REAL_TO Conversions
- •TIME_TO/TIME_OF_DAY Conversions
- •STRING_TO Conversions
- •TRUNC
- •Numeric Functions
- •SQRT
- •ASIN
- •ACOS
- •ATAN
- •EXPT
- •Standard Library Elements
- •String functions
- •LEFT
- •RIGHT
- •CONCAT
- •INSERT
- •DELETE
- •REPLACE
- •FIND
- •Bistable Function Blocks
- •SEMA
- •Trigger
- •R_TRIG
- •F_TRIG
- •Counter
- •CTUD
- •Timer
- •The UTIL.LIB Library
- •UTIL.LIB Library
- •BCD conversion
- •Bit/byte functions
- •EXTRACT
- •PACK
- •PUTBIT
- •UNPACK
- •Mathematical help functions
- •DERIVATIVE
- •INTEGRAL
- •STATISTICS_INT
- •STATISTICS_REAL
- •VARIANCE
- •Controllers
- •Signal generators
- •BLINK
- •Function manipulators
- •CHARCURVE
- •RAMP_INT
- •RAMP_REAL
- •Analogue value processing
- •HYSTERESIS
- •LIMITALARM

40• WAGO-I/O-PRO 32 V2.2 Overview
Languages
2.4.6 Ladder Diagram (LD)
The Ladder Diagram is also a graphics oriented programming language which approaches the structure of an electric circuit.
On the one hand, the Ladder Diagram is suitable for constructing logical switches, on the other hand one can also create networks as in FBD. Therefore the LD is very useful for controlling the call of other POUs.
The Ladder Diagram consists of a series of networks. A network is limited on the left and right sides by a left and right vertical current line. In the middle is a circuit diagram made up of contacts, coils, and connecting lines.
Each network consists on the left side of a series of contacts which pass on from left to right the condition "ON" or "OFF" which correspond to the Boolean values TRUE and FALSE. To each contact belongs a Boolean variable. If this variable is TRUE, then the condition is passed from left to right along the connecting line. Otherwise the right connection receives the value OFF.
x Example of a network in a Ladder Diagram made up of contacts and coils
2.4.6.1 Contact
Each network in LD consists on the left side of a network of contacts (contacts are represented by two parallel lines: | |) which from left to right show the condition "On" or "Off".
These conditions correspond to the Boolean values TRUE and FALSE. A Boolean variable belongs to each contact. If this variable is TRUE, then the condition is passed on by the connecting line from left to right, otherwise the right connection receives the value "Out".
Contacts can be connected in parallel, then one of the parallel branches must transmit the value "On" so that the parallel branch transmits the value "On"; or the contacts are connected in series, then contacts must transmit the condition "On" so that the last contact transmits the "On" condition. This therefore corresponds to an electric parallel or series circuit.
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WAGO-I/O-PRO 32 V2.2 Overview |
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Languages |
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A contact can also be negated, recognizable by the slash in the contact symbol: |/|. Then the value of the line is transmitted if the variable is FALSE.
2.4.6.2 Coil
On the right side of a network in LD there can be any number of so-called coils which are represented by parentheses:( ). They can only be in parallel. A coil transmits the value of the connections from left to right and copies it in an appropriate Boolean variable. At the entry line the value ON (corresponds to the Boolean variable TRUE) or the value OFF (corresponding to FALSE) can be present.
Contacts and coils can also be negated (in the example the contact SWITCH1 and the coil %QX3.0 is negated). If a coil is negated (recognizable by the slash in the coil symbol: (/)), then it copies the negated value in the appropriate Boolean variable. If a contact is negated, then it connects through only if the appropriate Boolean value is FALSE.
2.4.6.3 Function blocks in the Ladder Diagram
Along with contacts and coils you can also enter function blocks and programs In the network they must have an input and an output with Boolean values and can be used at the same places as contacts, that is on the left side of the LD network
2.4.6.4 Set/Reset coils
Coils can also be defined as set or reset coils. One can recognize a set coil by the "S" in the coil symbol: (S)) It never writes over the value TRUE in the appropriate Boolean variable. That is, if the variable was once set at TRUE, then it remains so.
One can recognize a reset coil by the "R" in the coil symbol: (R)) It never writes over the value FALSE in the appropriate Boolean variable: If the variable has been once set on FALSE, then it remains so.
2.4.6.5 LD as FBD
When working with LD it is very possible that you will want to use the result of the contact switch for controlling other POUs. On the one hand you can use the coils to put the result in a global variable which can then be used in another place. You can, however, also insert the possible call directly into your LD network. For this you introduce a POU with EN input.
Such POUs are completely normal operands, functions, programs, or function blocks which have an additional input which is labeled with EN. The EN input is always of the BOOL type and its meaning is: The POU with EN input is evaluated when EN has the value TRUE.
An EN POU is wired parallel to the coils, whereby the EN input is connected to the connecting line between the contacts and the coils. If the ON
WAGO-I/O-SYSTEM 759 WAGO-I/O-PRO 32