Delta DVP-ES2/EX2/SS2/SA2/SX2/SE Continuous execution vs. Pulse execution, Operand Data format

DVP - ES2/SA2/SS2/SA2/SX2/SE Operation Manual - Programming

supports index E and F.

A symbol “*” is given to device which can be used for this operand Steps occupied by the 16-bit/32-bit/pulse instruction

Applicable PLC models for 16-bit/32-bit/pulse execution instruction.

Continuous execution vs. Pulse execution

1.There are two execution types for instructions: continuous execution instruction and pulse instruction. Program scan time is shorter when instructions are not executed. Therefore, using the pulse execution instruction can reduce the scan time of the program.

2.The ‘pulse’ function allows the associated instruction to be activated on the rising edge of the drive contact. The instruction is driven ON for the duration of one program scan.

3.In addition, while the control input remains ON, the associate instruction will not be executed for the second time. To re-execute the instruction the control input must be turned from OFF to ON again.

Pulse execution instruction					When X0 goes from OFF to ON, MOVP
	X0				instruction will be executed once and the
			D10		instruction will not be executed again in the scan
		MOVP		D12
					period
Continuous execution instruction
					When X1=ON, the MOV instruction can be
	X1				re-executed again in every scan of program. This
			D10		is called continuous execution instruction.
		MOV		D12

Operands

1.Bit devices X, Y, M, and S can be combined into word device, storing values and data for operations in the form of KnX, KnY, KnM and KnS in an application instruction.

2.Data register D, timer T, counter C and index register E, F are designated by general operands.

3.A data register D consists of 16 bits, i.e. a 32-bit data register consists of 2 consecutive D registers.

4.If an operand of a 32-bit instruction designates D0, 2 consecutive registers D1 and D0 will be occupied. D1 is thehigh word and D0 is the low word. This proncipal also applys to timer T and 16-bit counters C0 ~ C199.

5.When the 32-bit counters C200 ~ C255 are used as data registers, they can only be designataed by the operands of 32-bit instructions.

Operand Data format

3 - 16