Overview

Description

The Compare block compares two inputs.
If Input 0 is greater than Input 1, then the block outputs a value of 1 (TRUE).
If Input 0 is less than or equal to Input 1, the block outputs a value of 0 (FALSE).

The output of the Compare is evaluated at the update rate, determined by the Evaluate Block.

Example

The following example demonstrates how to use the Counter Block and take the output and turn on Digital IO based on the Counter output.

The Comparator is being used to compare the output count of the Counter with a Bit Constant, and based on the Bit Constant, send a High State to the corresponding Digital Out blocks.

The configuration values for this block are as follows:

Evaluate Block	This block allows you to specify whether the block executes Every Sample, Every Other Sample (Odd or Even), or Every Fourth Sample (and specify the First, Second, Third, or Fourth) or background. This provides greater flexibility in controlling the execution of a model and to preserve performance for other areas of motion control.
User Data 0	Application-specific data. See User Data Storage.
User Defined Block Priority	When selected, allows you to enter a Priority Code to modify Execution Ordering of this block. For more information, see Block Execution Order and User Defined Block Priority.
Priority	For an explanation of how the Priority field is used by the MechaWare Model Downloader, see Block Execution Order and User Defined Block Priority.
User Data 0	Application-specific data. See User Data Storage.
User Data 1	Application-specific data. See User Data Storage.

Matlab/Simulink

Simulink Interface

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The inputs are double precision values that are compared to form the output. If Input 0 is greater than Input 1 then the block will output a value of 1 (TRUE). If Input 0 is less than or equal to Input 1, then the block will output a value of 0 (FALSE).

The block has two user data fields (User Data 0, User Data 1) to store application-specific data for convenient storage and retrieval. See User Data Storage for details.

The block's update schedule is determined by the Evaluate Block. The following Parameter Dialog Box can be opened by double-clicking on the block in a Simulink Model:

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C++ API

COMPBlock

Declaration

Public Method

	class COMPBlock: public virtual Block { public: // User accessible coefficients };
	Required Header: mechaware.h

Description

The Compare block compares the value of two inputs. This block has no configurable parameters.

Methods

Block Methods