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FAQ

What feature does the built-in DIO in LT have?

The built-in DIO in LT allows for high speed counter and PWM output as special I/Os, as shown below, when standard I/O is not selected.

Feature			Points	Remarks	Details (Reference Manual)
Standard I/O
	Standard Input *1		12	---	P31-61
	Standard Output *1		6	---	P31-63
Special I/O
	High Speed Counter (Single-Phase Counter) *1		4CH	Measures single-phase input signals	P31-66
		Counter Control	---	Switches up/down.	P31-66
		Preload Input	---	Changes the current value to a value of your choice.	P31-72
		Prestrobe Input	---	Memorizes the current count value.	P31-78
		Synchronize Output	---	Turns on the but when the count value falls within the specified range.	P31-81
	High Speed Counter (2-Phase Counter) *1		2CH	Measures 2-phase input signals.	P31-89
		Counter Control		Switches up/down.	P31-66
		Phase Factor Mode	---	Specify the measuring method.	P31-92
		Preload Input	---	Changes the current value to a value of your choice.	P31-72
		Prestrobe Input	---	Memorizes the current count value.	P31-78
		Synchronize Output	---	Turns on the bit when the count value falls within the specified range.	P31-81
		Marker Input	---	Clears the count value.	P31-92
	PWM Output *1		4CH	Outputs the output frequency pulse using the specified on duty.	P31-94
	Normal Pulse Output *1		4CH	Outputs the set frequency based on the set pulse value.	P31-102
	Acceleration/Deceleration Pulse Output *1		4CH	Increases the pulse to the set frequency for output.	P31-110
	Pulse Catch Input		4CH	Imports short pulses (10 microseconds or higher) and turns on the specified bits.	P31-122

*1	The same I/O terminals are used for standard input, standard output, PWM output, pulse output, and high speed counter. You cannot simultaneously use the maximum number of terminals for each input or output.
	[Combining Standard I/O and Special I/O] Reference Manual P31-4