MyWidth = InputBox('Please Enter A Width', 'Width Input', '750') Here is an example of an input box function used to prompt the user for a width value: So, a function would be added to call an input box function and then assign the collected input to an Inventor parameter. In the previous example, where the goal was to create a collection of rules to determine a standard or custom size, the first rule would control the dialog box to collect the input from the user. This syntax consists of the function category, function name, and function arguments. The predefined iLogic functions follow VB.NET syntax and require the coding to follow the syntax to work. When a rule is run, the functions within it are executed. And finally, another rule might be invoked to add application-specific features (for example, add left-hand switch mounting holes, if the custom design is for a left-hand application).ДЄ function is an instruction created and used within a rule to modify the Inventor model or read some data from the file. Yet another rule would then determine whether standard features are included or excluded based on the size (for example, if the hole spacing exceeds X, add another hole). If it is a custom size, a part number and description are automatically generated to honor your standard nomenclature. Another rule would determine whether the requested size is an existing standard size or a new custom one. The first rule might allow you to input the requested size using a customized dialog form. You can use iLogic to set up a collection of rules in a template file. Once the size is determined, you would decide to include or exclude features per your design guidelines and then include other features based on the specific application of this custom design.Д«ecause the process of configuring your product line relies on your experience and memory, it might be time-consuming and error-prone, particularly if you need to have another Inventor user, with less experience with your product, create the design. With traditional Inventor tools, you would determine whether the requested size is standard, and if it is not, you would create a new custom-size component to fit the need. But you also offer this same design in custom sizes when needed. This allows you to control the values of the model automatically, based on conditions and inputs.ДЇor example, you might have a product line offered to your customer in standard cataloged sizes, with standard features included or excluded based on the size and application. A rule can determine and/or set design parameters within your model. NET вЂњprogramвЂќ created and used to monitor and control Inventor objects such as parameters, features, and components. You can even have rules trigger other rules so that a cascade of decisions is made based on initial input from the user.ДЄn iLogic rule can be thought of as a small Visual Basic. If a part length causes the spacing to exceed the minimum hole spacing, then another hole is added.Д¬urrently, you might follow these rules manually as you design, but with the use of iLogic, you can add the rules to the model file so that the design rules are implemented automatically. For instance, suppose a design requires a minimum hole spacing to ensure a strong connection. Most design departments already have certain design rules they follow when creating parts and assemblies. To understand how iLogic works, you need to think in terms of design rules. These types include Text parameters, True/False parameters, and multi-value list parameters. iLogic uses custom parameter types to allow you to customize more than just the numeric data available with standard Inventor model parameters. iLogic rules can be embedded directly into individual Inventor files, or they can be saved externally where they can be accessed by all of your Inventor files. Using the iLogic tools, you can create simple, rule-based logic to set and drive parameters and properties in your designs. By creating custom iLogic code, you can add higher levels of design intelligence to your models. It extends and enhances the design capabilities and allows you to automate tedious design tasks. ILogic is a programming add-in that is included with the Autodesk В® Inventor В® software. Work with multiple rules in the same file.Although this chapter focuses primarily on using iLogic in the parts environments, the fundamentals you'll learn will apply to the assembly and drawing environments as well. iLogic is often used to speed up tedious design tasks, to enforce consistency across designs, and to allow the logic of programming to make design decisions based on predetermined design rules. In this chapter, you will explore the use of iLogic to configure your models with intelligence and automation. Mastering Autodesk Inventor 2015 and Autodesk Inventor LT 2015 (2014) Chapter 20.

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