Mitsubishi Electronics QD75P, QD75D user manual 2 QD75 main functions

3SPECIFICATIONS AND FUNCTIONS

3.2.2 QD75 main functions

MELSEC-Q

OPR control

Major positioning control

The outline of the main functions for positioning control with the QD75 is described below. (Refer to Section 2 for details on each function.)

	Main functions	Details							Reference
									section
Machine OPR control		Mechanically establishes the positioning start point using							8.2
		a near-point dog or stopper. (Positioning start No. 9001)
		Positions a target to the OP address (						Machine
						Md.21
Fast OPR control		feed value) stored in the QD75 using machine OPR.							8.3
		(Positioning start No. 9002)
	Linear control								9.2.2
	(1-axis linear control)	Positions a target using a linear path to the address set in
									9.2.3
	(2-axis linear interpolation control)	the positioning data or to the position designated with the
									9.2.4
	(3-axis linear interpolation control)	movement amount.
									9.2.5
	(4-axis linear interpolation control)
	Fixed-feed control	Positions a target by the movement amount designated
Position		with the amount set in the positioning data.							9.2.6
control	(1-axis fixed-feed control)	(With fixed-feed control, the "			Current feed value"				9.2.7
			Md.20
	(2-axis fixed-feed control)								9.2.8
		is set to "0" when the control is started. With
	(3-axis fixed-feed control)
									9.2.9
		2-, 3-, or 4-axis fixed-feed control, the fixed-feed is fed
	(4-axis fixed-feed control)
		along a linear path obtained by interpolation.)
		Positions a target using an arc path to the address set in							9.2.10
	2-axis circular interpolation control	the positioning data, or to the position designated with the
									9.2.11
		movement amount, sub point or center point.
	Linear control								9.2.12
	(1-axis linear control)
Speed		Continuously outputs the pulses corresponding to the							9.2.13
control	(2-axis linear interpolation control)	command speed set in the positioning data.							9.2.14
	(3-axis linear interpolation control)								9.2.15
	(4-axis linear interpolation control)
		First, carries out speed control, and then carries out							9.2.16
Speed-position switching control		position control (positioning with designated address or
		movement amount) by turning the "speed-position							9.2.17
		switching signal" ON.
		First, carries out position control, and then carries out
Position-speed switching control		speed control (continuous output of the pulses							9.2.18
		corresponding to the designated command speed) by
		turning the "position-speed switching signal" ON.
		Changes the Current feed value (					) to the address
				Md.20
		set in the positioning data.
	Current value changing	The following two methods can be used.							9.2.19
		(The machine feed value cannot be changed.)
		• Current value changing using positioning data
		• Current value changing using current value changing
Other		start No. (No. 9003)
		No execution control system. When NOP instruction is
control
	NOP instruction	set, this instruction is not executed and the operation of							9.2.20
		the next data is started.
	JUMP instruction	Unconditionally or conditionally jumps to designated							9.2.21
		positioning data No.
	LOOP	Carries out loop control with repeated LOOP to LEND.							9.2.22
	LEND	Returns to the beginning of the loop control with repeated							9.2.23
		LOOP to LEND.

3 - 6