Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Types of Sequences, SFC diagram

5 . Sequential Function Chart

5.5Types of Sequences

Single Sequence: The basic type of sequence

The first step in a step ladder diagram is called initial step, ranged as S0 ~ S9. The steps following the initial step are general steps numbered as S10 ~ S1023. When IST instruction is applied, S10 ~ S19 will become the steps for zero return operation.

1.Single Sequence without Divergence and Convergence

After a sequence is completed, the control power on the steps will be transferred to the initial step.

Step Ladder Diagram				SFC diagram
M1002	ZRST	S0	S127	M1002
				S0
	SET	S0		X0
S0	X0	S20		S20	Y0
S	SET			X1
S20
				S30	Y1
S	Y0
	X1	S30		X2
	SET			S40	Y2
S30
				X3
S	Y1
	X2	S40		S50	Y3
	SET			X4
S40
				S60	Y4
S	Y2
	X3			X5
	SET	S50
S50				S0
S	Y3
	X4
	SET	S60
S60
S	Y4
	X5
	S0
	RET
	END

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