Programming

Overview

The Main type is always managed by an HSCMain function block.

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

Adding the HSCMain Function Block

Step	Description
1	Select the Libraries tab in the Software Catalog and click Libraries. Select Controller > M258 > M258 Expert IO > HSC > HSCMain_M258 in the list, drag-and-drop the item onto the POU window.
2	Type the Main type instance name (defined in configuration) or select the function block instance by clicking: Using the input assistant, the HSC instance can be selected at the following path: Global Variables > <MyController> > PLC Logic > IoConfig_Globals.

Step

Description

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

Select Controller > M258 > M258 Expert IO > HSC > HSCMain_M258 in the list, drag-and-drop the item onto the POU window.

Type the Main type instance name (defined in configuration) or select the function block instance by clicking:

Using the input assistant, the HSC instance can be selected at the following path: Global Variables > <MyController> > PLC Logic > IoConfig_Globals.

I/O Variables Usage

The tables below describe how the different pins of the function block are used in Period meter type.

This table describes the input variables:

Input	Type	Description
EN_Enable	BOOL	When EN input is configured: if TRUE, authorizes the counter enable via the Enable input.
EN_Preset	BOOL	Not used.
EN_Cap	BOOL	Not used.
EN_Compare	BOOL	Not used.
EN_Out0	BOOL	Not used.
EN_Out1	BOOL	Not used.
F_Enable	BOOL	Forces the Enable condition.
F_Preset	BOOL	Not used.
F_Out0	BOOL	Not used.
F_Out1	BOOL	Not used.
ACK_Modulo	BOOL	Not used.
ACK_Preset	BOOL	Not used.
ACK_Cap	BOOL	Not used.
SuspendCompare	BOOL	Not used.

This table describes the output variables:

Outputs	Type	Comment
HSC_REF	EXPERT_REF	Reference to the HSC. To be used with the EXPERT_REF_IN input pin of the Administrative function blocks.
HSC_Err	BOOL	TRUE = indicates that an error was detected. Use the EXPERTGetDiag function block used to get more information about this detected error.
Validity	BOOL	TRUE = indicates that output values on the function block are valid. If the time-out value is exceeded, Validity = FALSE.
Run	BOOL	TRUE = Counter is activated.
TH0	BOOL	Not used.
TH1	BOOL	Not used.
TH2	BOOL	Not used.
TH3	BOOL	Not used.
Modulo_Flag	BOOL	Not used.
Preset_Flag	BOOL	Not used.
Cap_Flag	BOOL	Not used.
Reflex0	BOOL	Not used.
Reflex1	BOOL	Not used.
Out0	BOOL	Not relevant.
Out1	BOOL	Not relevant.
CurrentValue	DINT	The value of the counter.