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Topic Details for Soft Logic

Boolean Output Instructions

Boolean output instructions output the value on the top of the logic stack to an address given as an explicit parameter. Output instructions do not modify the logic stack. This means that multiple output instructions can be used in series without the result of one instruction affecting the next.

Instruction	Description	# Params	Y	C	Bit Range
OUT	Output logic stack to bit	1	X	X
OUT	Output logic stack to multiple bits	2	X	X	X
PD	Output logic stack one shot	1	X	X
PD	Output logic stack one shot to multiple bits	2	X	X	X
RST	Reset bit if logic stack true	1	X	X
RST	Reset multiple bits if logic stack true	2	X	X	X
SET	Set bit if logic stack true	1	X	X
SET	Set multiple bits if logic stack true	2	X	X	X

Boolean output instructions come in two forms: single output and bit range output. The system distinguishes between the two forms by the number of parameters given.

The PD instruction is a one-shot instruction. The output will be turned on for one scan if the logic stack input is true.

Example:


	// Output to a single bit.
	NETWORK 1
	STR X1
	OUT Y1
	RST Y2
	SET Y3
	
	// Output to a range of bits.
	NETWORK 2
	STR X2
	OUT C1 C9
	RST C10 C19
	SET C20 C21
	
	// Output using one-shot.
	NETWORK 3
	STR X3
	PD C30
	PD C40 C60

Ladder Examples

The following shows examples in ladder format. Each example shows the IL code as comments, followed by the ladder equivalent.

boolean output example 1 boolean output example 2 boolean output example 3 boolean output example 4