IEC is an IEC standard for programmable controllers. It was known as IEC before the change in numbering system by IEC. The parts of the IEC. IEC Edition INTERNATIONAL. STANDARD. NORME. INTERNATIONALE. Programmable controllers –. Part 6: Functional safety. View Abstract. Product Details. Detail Summary. View all details. Active, Most Current. RU. Additional Comments: RUSSIAN * SAME AS IEC Format.
|Published (Last):||27 May 2008|
|PDF File Size:||15.3 Mb|
|ePub File Size:||4.32 Mb|
|Price:||Free* [*Free Regsitration Required]|
Fault insertion test requirements. In this case, the concept of the dynamic memory management is helpful. The term class factory denotes an object in object-oriented programming, which generates other objects.
Since the class factory is derived from an abstract class here: Thus, functionality is added to the function block through this reference. Fill in your details below or click an icon to log in: Thus, the example contains four function blocks and one interface. Two parameters define the 661131-6 name and the password, while the third one contains connection data for the database.
Assessment evidence and documentation.
Standards New Zealand :: Programmable controllers – Part 6: Functional safety
As qualified versus as shipped. The Write method of the logger can be accessed through this interface.
In this way, an abstract function block can be compared with an interface. Techniques and measures to 661131-6 the introduction of faults in ASICs. PLCopen starts new working group on Industry 4. 16131-6 instance variable is constrained by a specific type. Comments 0 Trackbacks 0 Leave a comment Trackback.
The result is a function block, which covers all necessary cases internally. Notify me of new posts via email. This concept is denoted as Dependency Injection.
Furthermore, the Write method expands the text by the word Logger. Example 3 TwinCAT 3.
BS EN 61131-6:2012
HW design and development. Example 2 TwinCAT 3. This is possible, because all function blocks implement the interface ILogger. The objective of this part is: Post was not sent – check your email addresses! You are commenting using your WordPress. The interface ILogger simplifies developing further variants.
FS-PLC operation, maintenance and modification procedures. Leave a Reply Cancel reply Enter your comment here The left section represents the blocks, which can be located in a PLC library. One of them is abstract factorywhich is employed in the following example. As a check, the whole text is returned. Information on type and content of documentation.
As a consequence, it is not anymore necessary to create an instance of all possible function blocks statically.
HW functional safety requirements specification. Design requirements specification contents. The user determines which specific class factory to apply only when using blocks, i. This layer is however an abstract one. HW safety validation planning. This part is a ie specific implementation of the requirements of the IEC series and conformity to this part fulfils all of the applicable requirements of the IEC series related to FS-PLCs.
IEC The ‘Abstract Factory’ Pattern | Stefan Henneken
SW safety validation planning. In the Write method, an IF statement distinguishes different variants and calls the compatible private method respectively. Since the class factory always supplies the GetLogger method in this example, it is derived from an abstract base function block, which specifies this method.
IEC english Tags: It means that the original functionality of a module can be changed through the usage of the extension modules. HW requirements for the avoidance of systematic failures. Instance of the function block are created at run-time as well. As an example, a small PLC library for message logging is created. Abstract function blocks do not obtain any functionalities.
At the same time, the extension modules contain only the adjustments of the original functionality. FS-PLC design requirements specification.