Programming the Simple Type

Overview

A Simple type is always managed by an HSCSimple_TM3 function block.

NOTE: At build time, an error is detected if the HSCSimple_TM3 function block is used to manage a different HSC type.

Adding a HSCSimple Function Block

Step	Description
1	Select the Libraries tab in the Software Catalog and click Libraries. Select Intern > IODrivers > TM3 HSC > HSC > HSCSimple_TM3 in the list.
2	Drag-and-drop the item onto the POU window.
3	Edit the default Simple type instance name to match the Instance name of the counter function block defined in the Configuration window.

Step

Description

Select the Libraries tab in the Software Catalog and click Libraries.

Select Intern > IODrivers > TM3 HSC > HSC > HSCSimple_TM3 in the list.

Drag-and-drop the item onto the POU window.

Edit the default Simple type instance name to match the Instance name of the counter function block defined in the Configuration window.

I/O Variables Usage

The tables below describe how the different pins of the function block are used in Modulo-loop mode.

This table describes the input variables:

Input	Type	Comment
HSC_REF_TM3	HSC_REF_TM3	Reference to the HSC instance.
Enable	BOOL	TRUE = activates counter and takes into account pulses on the counter input.
Sync	BOOL	On rising edge, resets and initializes the counter.
ACK_Modulo	BOOL	On rising edge, resets Modulo_Flag.

This table describes the output variables:

Output	Type	Comment
Run	BOOL	TRUE = indicates counter is activated.
Valid	BOOL	TRUE = indicates that output values on the function block are valid.
Error	BOOL	TRUE = indicates that an error was detected.
ErrorId	HSC_ERROR_TM3	Indicates the value of the error detected. See the HSC_ERROR_TM3 enumeration.
Modulo_Flag	BOOL	Set to TRUE when the counter rolls over the Modulo value.
CurrentValue	DWORD	The value of the counter.