Get() [2/2]

static MotionController * Get ( int32_t controllerIndex )

static

Get an already running RMP EtherCAT controller.

Description: Get a MotionController object. This will NOT start the RMP firmware if it is not already running.

It will open and map in the existing firmware if it is running.

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Part of the Create and Initialize RapidCode Objects method group.

Note

Important usage instructions for all RapidCode creation methods: All creation methods, such as and Create(), AxisGet(), NetworkNodeGet(), etc. Each return valid pointers to RapidCode objects. These pointers are never null, even when there is an error during object creation.

Error Checking After Creation

Immediately after the creation of a RapidCode object, you need to check if there were any errors during its creation. You do this by calling the ErrorLogCountGet() method on the created object. If ErrorLogCountGet() returns a value greater than zero, it means there were errors during the object creation.

Handling Errors

To handle the errors, you call the ErrorLogGet() method once for each error on the created object to retrieve an RsiError object. You can then inspect the RsiError object to understand more about the error.

Helper Functions

RapidCode also provides helper functions in both C++ and C#, like HelperFunctions::CheckErrors(), that work with all RapidCode objects. These helper functions operate on RapidCodeObject, hence they are compatible with all RapidCode objects. For example:

Notes on creation methods with the C# API (vs. C++)

In the C# API, the pointers are replaced by references due to differences between C++ and C#. The creation methods return a reference to the object instead of a pointer. However, the method calls and error handling procedures remain the same. Null references are not returned by the creation methods in C#. Always check for errors after object creation, as described above.

Note

Object Cleanup Any and all objects created by RapidCode creation methods will be cleaned up by calling MotionController::Delete(). This should be done with your application is finished using RapidCode objects.

See also

ErrorLogCountGet , ErrorLogGet , Delete , HelperFunctions.CheckErrors

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Parameters

controllerIndex

The index of the controller to get (future multiple MotionController support). Default is 0.