OBIOForwardCounter (FB)

FUNCTION_BLOCK OBIOForwardCounter EXTENDS OBIOBaseCounter

Used for forward counter on eco V3 PLC

precondition

the respective hardware input channel is configured as forward counter.

Up to 4 counter are possible, FB input channel=0..3 for hardware inputs 4..7

Note

This block should just be called once per cycle otherwise inconsistent values could be send to PRU, if send twice in short time.

InOut:

Scope	Name	Type	Initial	Comment	Inherited from
Input	Enable	BOOL	FALSE	A rising edge (Enable = TRUE) starts the operation, the output Busy goes to TRUE. All other inputs are read and considered continuously. Execution will continue forever until a falling edge (Enable = FALSE) aborts the operation. During Aborting the Busy is still TRUE. Afterward all outputs are reset.	AbbLConC3
Output	Busy	BOOL	FALSE	Operation is running (while output Error is FALSE)	AbbLConC3
	Error	BOOL	FALSE	Operation is stopped with error (while output Busy is FALSE). This output is TRUE for at least one cycle or until Enable is set to FALSE. The output ErrorID gives more details about the error.	AbbLConC3
Input	Channel	BYTE	0	Channel number, for encoder 0/1, for forward counter 0..3, for PulseTrainOutput 0/1	OBIOBaseCounter
	Set	BOOL		Sets counter value to CounterValueSet on rising edge	OBIOBaseCounter
	CounterValueSet	UDINT		Counter value to set	OBIOBaseCounter
	EnableLimit	BOOL		Use limits, FALSE: counts ‘endless’, TRUE: counts from 0 to LimitValueMax, starts again with 0 on overflow. A new value will be used with rising edge on Enable	OBIOBaseCounter
	LimitValueMax	UDINT	0	Upper limit, will count from 0 to < LimitValueMax-1 (with EnableLimit=TRUE), so the range for counting is LimitValueMax. The value has to be set while CounterValue < LimitValueMax. A new value will be used with rising edge on Enable	OBIOBaseCounter
Output	ErrorID	Error_ID	0	Error code	OBIOBaseCounter
	CounterValue	UDINT		Actual counter value	OBIOBaseCounter