T315F-11 Function Designer Concepts

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System 800xA Training 
 Chapter 11 - 1 
Chapter 11 Function Designer Concepts 
 
TABLE OF CONTENTS 
 
Chapter 11 Function Designer Concepts ................................................................................................................................. 1 
11.1 General Information.................................................................................................................................................... 2 
11.1.1 Objectives ............................................................................................................................................................ 2 
11.1.2 Legend................................................................................................................................................................. 2 
11.1.3 Reference Documentation .................................................................................................................................... 2 
11.2 Introduction ................................................................................................................................................................ 3 
11.2.1 General ................................................................................................................................................................ 3 
11.2.2 Function Designer and Control Builder................................................................................................................. 4 
11.2.3 Advantages .......................................................................................................................................................... 4 
11.2.4 Intuitive Navigation.............................................................................................................................................. 5 
11.2.5 Instant Access and Monitoring.............................................................................................................................. 6 
11.2.6 Restrictions .......................................................................................................................................................... 6 
11.3 Engineering Workflow................................................................................................................................................ 7 
11.3.1 Prerequisites......................................................................................................................................................... 7 
11.3.2 Main Workflow.................................................................................................................................................... 7 
11.3.3 Configuring Function Diagrams............................................................................................................................ 8 
11.3.4 Functional Planning.............................................................................................................................................. 8 
11.3.5 Naming Concept .................................................................................................................................................. 9 
11.4 Function Diagrams.................................................................................................................................................... 10 
11.4.1 Flat and Nested Diagrams................................................................................................................................... 10 
11.4.2 Function Diagram Views.................................................................................................................................... 11 
11.4.3 Layers in a Diagram ........................................................................................................................................... 12 
11.4.4 Description in Footer.......................................................................................................................................... 13 
11.4.5 Multiple Pages ................................................................................................................................................... 13 
T315F-11 Function Designer Concepts - RevE 
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11.1 General Information 
11.1.1 Objectives 
On completion of this chapter you will be able to: 
 Describe advantages and limitations of Function Designer 
 Describe the design workflow 
 Identify the properties and functionalities of function diagrams 
 
11.1.2 Legend 
> Indicates when you go from one menu to a sub-menu 
Italic Indicates object and file names 
“ “ Indicates dialog box buttons, tabs, menus etc. 
Bold Indicates important topics 
 Indicates start/explanation of student activity 
 
11.1.3 Reference Documentation 
3BDS011224 System 800xA 
 Engineering Studio Function Designer 
3BSE100968 System 800xA 
 Engineering Studio Function Designer - Getting Started 
3BSE041389 System 800xA 
 System Planning 
System 800xA Training 
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11.2 Introduction 
11.2.1 General 
Function Designer is an engineering tool for function oriented planning in System 
800xA. Function Designer allows the engineer to create applications using a user 
friendly graphic environment, in the form of function diagrams. 
It allows engineering on a single diagram comprising of functions, function blocks, 
control modules, sequences, I/O channels and field devices. Other components such as 
bit maps, Active X objects and free text/graphics may be placed on the diagram to 
give the end user a complete view of the control functionality. 
The diagram below shows some of the possibilities: 
 
 
Function diagrams can be nested in multiple levels and the signal interconnections 
between function diagrams are automatically documented and provide built-in 
navigation. The style of a diagram is similar to the IEC-61131 Function Block 
Diagram languages. 
Once a diagram is created, the Function Designer generates the complete code 
required for that functionality in Control Builder. 
Field device 
I/O signal 
Function 
Control module 
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11.2.2 Function Designer and Control Builder 
Function diagrams are usually created in the Functional Structure. A Function aspect 
is added to objects in the Functional Structure and each diagram is allocated to a 
particular application in the project. The generated code is created in the Control 
Structure. 
NOTE! It is also possible to create function diagrams on object 
types in a library in the Object Type Structure. 
 
Function Designer is an engineering tool that ‘sits’ outside Control Builder, but when 
it is used to generate configuration data it uses an interface into Control Builder to 
create the code corresponding to the components and connections on the diagram. 
Function Designer
Diagram 1
Diagram 2
Diagram 3
Control Builder
 
 
11.2.3 Advantages 
Function Designer provides a number of advantages compared to engineering done in 
the Control Builder: 
 Combinations between control modules and function blocks on one function 
diagram are possible. 
 Navigation between references to different pages within one function diagram, or 
between different function diagrams is possible. 
 The objects names within a function diagram can start with a number and the use 
of a dash is allowed, e.g. 123FIC345-FD. 
 Generation and printing of function oriented documentation in one step to 
document your control configuration according international standards. 
 Automatic creation of connection variables. 
 Live data display and value forcing in online mode. 
System 800xA Training 
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11.2.4 Intuitive Navigation 
Multiple diagrams may be linked together either by of diagram references or else by 
nesting diagrams. 
Reference to other diagramReference to other diagram
Reference to other sheetReference to othersheetReference to other sheetReference to other sheet
 
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11.2.5 Instant Access and Monitoring 
A function diagram is just another aspect of an object. Thus a right click on the 
component in the diagram gives access to any other aspect of that object. 
 
 
11.2.6 Restrictions 
This version of Function Designer does not support: 
 Batch management 
 Safety applications (SIL-2 and SIL-3) 
 
System 800xA Training 
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11.3 Engineering Workflow 
11.3.1 Prerequisites 
In order to work with Function Designer, there are still some general tasks that have to 
be done in Control Builder or the Engineering Workplace. 
 Create a Control Network and Control Project(s) 
 Create the controller hardware objects and assign IP address 
 Create the control applications and assign to the controllers 
 Create the control tasks and assign to the applications 
 Assign some sub-libraries to the application or library 
 Download the application 
 Connect the OPC server to the controller(s) 
 Create parent objects in the Functional Structure to “host” the function diagrams 
 
11.3.2 Main Workflow 
Working with Function Designer requires a particular workflow. First a Control 
Project must be opened in Control Builder. 
NOTE! Control Builder must be “offline”. 
 
Configure 
function diagram
Define data flow order
Generate code
Download from 
Control Builder
Allocate diagram to 
application
Enable live data in 
diagrams
Create diagrams and insert control modules, 
function blocks, variables, references …
Define allocated controller and cycle time (task)
Define the execution order of all blocks
Generate the code to download to controller 
Download the code to the controller
Optional enable live data in diagrams for 
commissioning or diagnostics
Allocate I/O signals Allocate the IO signals to boards 
Write the I/O allocation to Control Builder
 
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11.3.3 Configuring Function Diagrams 
1. Create a new diagram based on a diagram template, using a parent object in the 
Functional Structure. Function Designer will initially store the content in an 
unassigned application until the appropriate application is selected and assigned. 
2. Create different pages, if required. 
3. Allocate the diagram to the correct application 
4. Drag-and-drop objects to the function diagram from the Object Type Structure 
5. Parameterize the signal objects 
6. Define the data flow order 
7. Generate the code 
8. Allocate signal objects to I/O modules 
9. Write the I/O allocation to Control Builder 
10. Download to controller(s) and go online 
 
NOTE! All the code which was generated by the Function 
Designer is “read only” in the Control Builder. 
 
11.3.4 Functional Planning 
The definition of how to distribute the objects and logics in the function diagrams is 
one of the most critical tasks of the project. Function Designer provides enough 
flexibility to implement a functionality using different philosophies. 
A specific process can be divided into few complex function diagrams that include 
many objects, or it can be divided into many simple function diagrams that include 
few objects. 
To decide which methodology to use, the design has to be analyzed from different 
perspectives: 
 Functionality: A diagram has to group components that have a common 
functionality. Objects that don’t interact with each other in a direct or an indirect 
way shouldn’t be part of the same diagram 
 Modularization: Each diagram should contain only one main object (normally 
any object that has a faceplate can be considered as such). The function diagram 
must then include all the logics and functions required to give the desired 
functionality to that main object. 
 Reusability: If a specific functionality is repeated many times, a function diagram 
should be limited to implement this functionality only, since copying a function 
diagram is well supported. If the repeated functionalities have minor differences or 
different configuration it is easy to implement these modifications later on. 
 
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11.3.5 Naming Concept 
Each aspect object in the Engineering Workplace has a Name aspect. For control 
objects there is an additional Control Builder Name aspect which gets synchronized 
with the name in the Project Explorer, and therefore always follow the IEC 61131-3 
naming concept (no number in front, like 123FIC456). 
NOTE! Use the Name aspect for changing a name. Function 
Designer will take care of the Control Builder Name 
aspect. 
If a name is used in a function diagram that does not fit the IEC 61131-3 conventions, 
then Function Designer changes the Control Builder Name aspect so that it complies. 
 
For example, we want to change the name of a particular object: 
1. Right click on the Sxx_V2 object and select “Name” to change it. 
 
 
2. Put numbers at the beginning of the name and click “Apply”. 
 
 
3. Observe the result in Control Builder and in the Functional Structure. 
 
 Control Builder Engineering Workplace 
 
Note that the object has an “x” at the beginning of the name in Control Builder to 
avoid naming errors. 
NOTE! To rename a function diagram, use the Name aspect of 
the corresponding object. 
 
Function designer provides an automatic naming feature which is set in the Functional 
Settings aspect. Therefore, if the Naming property in the Functional Settings aspect is 
set to Auto (or a name pattern is not defined), Function Designer does the renaming 
based on the differences between the source and target name. 
The names are then split into tokens identifying unmodified/modified substrings and 
numbers. This is useful for bulk operations as a change of a function diagram name 
will change all component names as well, providing all components of this function 
diagram have the function diagram name in front. 
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11.4 Function Diagrams 
A function diagram can show a complete process control loop with all its function 
blocks, control modules, field devices, signal objects (I/O signals) and their signal 
connections. 
A function diagram is a dynamic document on which components (and other graphics) 
are drawn: 
 Components on the diagram represent instances of functions, function blocks and 
control modules. 
 Components may be connected on the diagram graphically or by references to 
variables or diagrams. 
 Sequences can be included into function diagrams and their steps, transitions and 
actions can be configured in additional diagrams. 
Function Designer is used to generate code in Control Builder M, but with the 
advantage that the diagram can be drawn to graphically represent the functionality that 
it implements. If a project is built with Function Designer, it will consist of a set of 
function diagrams. 
 
11.4.1 Flat and Nested Diagrams 
A set of diagrams may be created independently and then linked to each other by 
reference to a common set of external references called “off-diagram references”: 
Diagram 1
Diagram 2
Diagram 3 Diagram 4
Reference
Reference Reference 
This creates a flat structure but allows data to be passed between diagrams. There is no 
formal relationship between the diagrams until the references are defined. 
 
Another alternative is to arrange diagrams within diagrams in a hierarchy. 
Diagram 1
Diagram 2
Diagram 3
Diagram 4
Diagram 5
 
These are referred to as nested diagrams. In this case, we refer to parent and child 
diagrams. The system will allow easy navigation between parent and child diagrams. 
Also each child diagram is represented as a component within its parent diagram. 
System 800xA Training 
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11.4.2 Function Diagram Views 
Function Designer offers three different views for a function diagram:Component view 
To create symbols or templates for function components in the Object Type 
Structure. 
 Diagram view 
To create function diagrams and to insert function components in the Functional 
Structure. 
 Parent Diagram view 
Alternative to the Diagram view to quickly find and navigate to a component. It is 
opened in the Functional Structure on the selected component object, and it 
displays and automatically navigates to the component in its parent diagram. 
 
Function Designer offers the possibility to open simultaneously several diagram 
/component documents. Each diagram/component document is opened in a separate 
window, such that you can have several windows open at the same time. 
Function Designer also offers the possibility to open the same diagram in several 
windows. That can be useful, for example, to display different parts or pages of a 
diagram/component simultaneously in different windows. 
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11.4.3 Layers in a Diagram 
The Diagram View allows the user to create logic on several layers: 
 Logic layer 
Contains the components and connections that form the control logic 
 Master Page layer 
Contains the header and footer definitions that will be present on all pages. 
 Background layer 
Can be used to place graphics which will appear on all pages 
 Annotation layer 
Used to add annotation to a diagram. 
 
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11.4.4 Description in Footer 
You can set the descriptions in the footer of the diagram with the aspect called 
Function Diagram Document. 
 
 
Open the Main View of the aspect and fill in the parts you need. In the example shown 
‘Feed water Flow Control’ was added and the title is shown in the diagram footer. 
 
 
11.4.5 Multiple Pages 
Some configurations are too complex to fit in one page. In order to make it easier to 
understand them, diagrams may be spread over two or more pages. 
To create a new page, select “View > Pages > Insert New Page”. 
 
 Exercise 11.1 
 
T315F-11 Function Designer Concepts - RevE 
Chapter 11 - 14 
 
	Chapter 11 Function Designer Concepts
	11.1 General Information
	11.1.1 Objectives
	11.1.2 Legend
	11.1.3 Reference Documentation
	11.2 Introduction
	11.2.1 General
	11.2.2 Function Designer and Control Builder
	11.2.3 Advantages
	11.2.4 Intuitive Navigation
	11.2.5 Instant Access and Monitoring
	11.2.6 Restrictions
	11.3 Engineering Workflow
	11.3.1 Prerequisites
	11.3.2 Main Workflow
	11.3.3 Configuring Function Diagrams
	11.3.4 Functional Planning
	11.3.5 Naming Concept
	11.4 Function Diagrams
	11.4.1 Flat and Nested Diagrams
	11.4.2 Function Diagram Views
	11.4.3 Layers in a Diagram
	11.4.4 Description in Footer
	11.4.5 Multiple Pages