HSCSimple_M241: Control a Simple Type Counter for M241

Function Block Description

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

one-channel counting
no threshold
no event
no capture
no 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 Only use the Function Block instance in the MAST task. Do 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`	`EXPERT_REF`	Reference to the HSC.
`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 the output values on the function block are valid.
`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.