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<h1 style="text-align: center;">Scripts <br> (Tasks and Classes)</h1>

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Introduction to the Scripts Module

The Scripts Module supports multiple programming languages, including C#, VB.NET, Python, and JavaScript, enabling the creation of high-performance server-side and client-side scripts in Display Code-Behind. Its built-in code editor streamlines development with automated translation between C# and VB.NET and provides access to all .NET Framework classes available in Visual Studio. The module simplifies distributed application development using server or client domains and ensures high performance through custom code compilation. Additionally, it enhances graphical displays with Display Code-Behind functions and offers debugging tools for quick identification and resolution of coding issues.

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The Scripts Module Allowsallows:

  • Multi-Threaded Task Execution
  • Event-Driven ActionsActions 
  • Library Creation for Methods and Classes
  • Intermixing C#, VB.NET and Python classes.
  • Integration with Third-Party Libraries.

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Key Concepts and Terms

The Scripts Module manages and executes user-defined scripts for automation and process control. 

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ScriptTask

Script Tasks

Defines code that executes in reaction to an event (trigger) or periodically at specified intervals.

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Script Classes

ScriptClass

A library of functions and methods that can be used in Script Tasks, Expressions, or from the Code Behind on graphical Displays.

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Script Expressions

ScriptExpression

One line of code in response to an event,

where

when the entire script isn't necessary.

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Script References

External DLLs included for a script or display code compilation.

Understanding the Scripts Module

Module Highlights

  • Built-in Code Editor: Our code editor

    works for

    supports C#, VB.NET, JavaScript, and Python languages

    , as well as XML and JSON documents

    .

  • Server and Client Domains: Create scripts that execute on the server for global reach

    ,

    or on the client side for local reach.

  • Events and Scheduling: Tasks and expressions can be triggered by date, time, condition, calendar, tag change, or interval. Execution is distributed among processes, each running in its own application domain, isolated from the real-time database, ensuring maximum system security and performance.

  • Object Orientation and

    Project Elements

    Solution Object: All solution

    elements

    objects, including

    Tags

    tags,

    Datasets

    datasets,

    Alarms

    alarms, devices, and communication statuses, are immediately accessible via IntelliSense as native .NET objects. No temporary tags or function calls are required. With a single command, move data from

    Tags

    tags to .NET objects and external

    Data-

    data tables.

  • Configure

    your

    Your Python Interpreter: The

    Script module

    Scripts Module delivers exceptional scripting capabilities across various programming languages with seamless integration of Python. You can configure any version of the Python interpreter for each project.

Configuring the Scripts Module

Configuration Workflow

Script module

Scripts Module configuration workflow

Action

Where 

Comments

Manage

Class Scripts

ScriptClasses

Scripts / Classes

Create or Import you function Library. Learn more at Scripts Classes.

Manage

Task Scripts

ScriptTasks

Scripts /

Task

Tasks

Create or Import Tasks. Learn more at Scripts Tasks.

Manage

Expressions

ScriptExpressions

Scripts / Expressions

For simple event or time driven actions, use Expressions. Learn more at Scripts Expressions.

Manage Script References

Scripts / References.

Learn more at Scripts References.

Track the module changes

 

If you code required their party libraries, include the references

Scripts / Monitor

. Learn more at Scripts

Monitor

References.


Working with the Scripts Module

Runtime Execution

For a detailed understanding of the script execution process on the software framework, refer to the Scripts Module Execution.

Monitoring the Script Module

The Scripts Monitor feature tracks and assesses script performance, providing crucial insights for optimizing your software platform. Explore Monitoring Scripts for an in-depth exploration of script monitoring techniques.

Client-Server Programming

To learn more about client-server programming in the software framework context, see Client-Server Programming.

Client-Server Data Security

To ensure the security and integrity of your data within the software framework, explore Client-Server Data Security. This resource provides detailed information on safeguarding data exchanges between clients and servers, protecting your project from potential security risks.

Leveraging Built-in Function Libraries

The Script module provides several built-in classes and methods libraries that can greatly streamline your project development process. For detailed documentation, see Built-in Methods and Libraries.

The key concept to be aware of regarding the execution of the tasks and expressions defined in the Script Module is that they execute on the server computer.

Only the CodeBehind of the displays is executed on each client computer. The script classes can be consumed by both server and client stations.

Current solutions are prioritizing user interfaces that are portable, meaning the exact same drawing and display configuration can run as a WPF Windows Rich Client or as a web HTML5 page inside a browser. If you intend to run the graphical interface only on WPF Windows and not on web pages, it is possible to enable this in Solution / Settings to allow tasks and expressions to run on the client side.

For complex solutions or very large solutions, it's useful to get a deeper understanding of the Module execution process. Read more at Scripts Module Execution if that is your case.

Script Runtime Attributes

The Namespace Script is the entry point for all objects related to the Scripts module.

The Script.Class object lists all configured tables and its runtime properties. The Script.Task object lists all configured database connections and their runtime properties.

Examples:

Script Task Properties

Property

Type

Description

Script.Task.Task1.ExecutionCount

Integer

Number of times the Script Task <Task1> was executed.

Script.Task.Task1.LastCPUTime

TimeSpan

The Amount of CPU used the last time the Script Task Task1 was executed.

→ Read more about Objects and Namespaces.

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BestPractices
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Best Practices and Troubleshooting

Best Practices and Recommendations

  • Code Formatting:  Use the 'Format' feature of the editor for more readability.
  • Naming Convention: Use a coherent and descriptive naming convention for tasks.
  • Task Domain: Select the appropriate domain for each task, considering whether the task is more suitable for client-side or server-side execution. Remember, Client-Side Tasks only applicable to RichClients
  • Reusable Code: Use reusable code by creating classes that encapsulate functionalities for use in various parts of the project.
  • Library Management: Manage libraries and external components effectively to avoid conflicts and compatibility issues.
  • Code Consistency: Maintain code consistency by following best practices and coding conventions.
  • Build Before Deployment: Always perform a build operation before deploying a project in a production environment to ensure all scripts are correct and up to date.
Best Practices and Troubleshooting

Troubleshooting and Common Issues

The Scripts module may encounter some issues in its operation. Here are some common issues and their troubleshooting:

  • Build Errors and Warnings: Make sure to check the 'BuildStatus' and 'BuildErrors' tabs to identify and address errors and warnings that arise during the build.
  • Code Language: If you change the code language in the code editor, confirm that the code has been correctly converted to the selected language.
  • Build Order: Ensure that the build order of the classes is set up correctly to avoid circular dependencies or initialization issues.
  • Domain Selection: Ensure that the domain is selected correctly (Client or Server) based on the needs of your project
.

Expression Syntax: Check the syntax of the expressions, ensuring they comply with VB.Net or C# standards.

Execution Settings: Ensure that the execution settings are correct, so that the expressions are executed as expected
  • .
  • Reference Issues: Make sure that all external references are configured correctly and that there are no compatibility issues or conflicts
.
  • in the Code Editor.
Syntax Errors: Check for syntax errors in the code.
  • Code Formatting:  Use the '
Auto
  • Format' feature
to identify potential issues
  • of the editor for more readability.
  • Incremental Compilation Issues: Monitor the incremental compilation process to identify and resolve potential issues that may arise.
  • Debugger Setup: Ensure that the debugger setup is correct to allow effective code debugging.
  • Breakpoints and Watch Variables: Use breakpoints and watch variables effectively to identify and resolve issues
.
Best Practices and Recommendations

Tasks:

  • Naming Convention: Use a coherent and descriptive naming convention for tasks.
  • Task Domain: Select the appropriate domain for each task, considering whether the task is more suitable for client-side or server-side execution.

Classes:

  • Reusable Code: Promote code reuse by creating classes that encapsulate functionalities for use in various parts of the project.

Expressions:

  • Expression Optimization: Write optimized expressions to ensure efficient execution and reduce resource usage.

External Libraries:

  • Library Management: Manage libraries and external components effectively to avoid conflicts and compatibility issues.
  • Code Consistency: Maintain code consistency by following best practices and coding conventions.
  • Build Before Deployment: Always perform a build operation before deploying a project in a production environment to ensure all scripts are correct and up to date.

Script Runtime Attributes

The Script Namespace is the entry point for all objects related to the Scripts module.

The Script.Class object lists all configured tables and its runtime properties.

The Script.Task object lists all configured database connections and their runtime properties.

Examples:

Script Task properties

Property

Type

Description

Script.Task.Task1.ExecutionCount

Integer

Number of times the Script Task <Task1> was executed.

Script.Task.Task1.LastCPUTime

TimeSpan

The Amount of CPU used the last time the Script Task Task1 was executed.

ModuleScript properties

Property

Type

Description

Script.IsStarted

Boolean

Flag indicating if the module Dataset has started.

Script.OpenStatusMessage

String

Message OK or error when initiating the module.

→ Read more about Objects and Namespaces.

→ Check the Script Examples and Solution Examples pages for some scripting examples
  • .

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