HSCSimple: HSC Simple Function Block

Function Block Description

This function block controls a Simple type counter with the following reduced functions:

oone-channel counting

ono additional external I/O

ono threshold

ono event

ono capture

ono reflex

The HSCSimple function block is mandatory when using a Simple counter type.

The function block instance name must match the name defined by configuration. Hardware related information managed by this function block is synchronized with the MAST task cycle.

WARNING

UNINTENDED OUTPUT VALUES

oOnly use the Function Block instance in the MAST task.

oDo not use the same Function Block instance in a different task.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

NOTE: Forcing the logical output values of the FB is allowed by EcoStruxure Machine Expert but it will have no impact on hardware related outputs if the function is active (executing).

Graphical Representation

IL and ST Representation

To see the general representation in IL or ST language, refer to Function and Function Block Representation.

I/O Variables Description

This table describes the input variables:

Inputs	Type	Comment
Enable	BOOL	TRUE = authorizes changes to the current counter value.
Sync	BOOL	On rising edge, presets and starts the counter.
ACK_Modulo	BOOL	Modulo loop mode: On rising edge, resets the modulo flag Modulo_Flag.

This table describes the output variables:

Outputs	Type	Comment
HSC_REF	HSC_REF	Reference to the HSC.
Validity	BOOL	TRUE = indicates that the output values on the function block are valid.
HSC_Err	BOOL	TRUE = indicates that an error was detected. Use the HSCGetDiag function block used to get more information about this detected error.
Run	BOOL	TRUE = counter is running. In One-shot mode, switches to 0 when CurrentValue reaches 0. A rising edge on Sync is needed to restart the counter.
Modulo_Flag	BOOL	Module loop mode: Set to TRUE when the counter rolls over the modulo value.
CurrentValue	DWORD	Current count value of the counter.