Mitsubishi Electronics QD75P Precautions during control, Setting the OP shift function, Status b4

12 CONTROL SUB FUNCTIONS

MELSEC-Q

(2)OP shift operation at the " Pr.47 Creep speed"

(When " Pr.56 Speed designation during OP shift" is 1)

Pr. 44 OPR direction

Pr. 47 Creep	When the " Pr. 53 OP
speed	shift amount" is positive
Zero point
	OP

Machine OPR start

	When the " Pr. 53 OP
Near-point dog	shift amount" is negative
Zero signal

Fig. 12.7 OP shift operation at the creep speed

[4] Precautions during control

The following data are set after the OP shift amount is complete.

•OPR complete flag ("

Md.31

Status: b4)

•

Md.20

Current feed value

•

•

•

Md.21

Md.26

Md.34

Machine feed value

Axis operation status

Movement amount after near-point dog ON ("

Pr.53

OP shift

amount" is not added.)

•OPR request flag ( Md.31 shift.

Status: b3) is reset after completion of the OP

[5] Setting the OP shift function

To use the "OP shift function", set the required details in the parameters shown in the following table, and write them to the QD75.

When the parameters are set, the OP shift function will be added to the machine OPR control. The set details are validated at the rising edge (OFF ON) of the PLC READY signal (Y0).

	Setting item		Setting			Setting details	Factory-set
			value				initial value
		OP shift amount		Set the shift amount during the OP shift.			0
Pr.53
		Speed		Select the speed during the OP shift
				0:		OPR speed
Pr.56		designation			Pr.46		0
		during OP shift		1:		Creep speed
					Pr.47

Refer to Section 5.2 "List of parameters" for setting details.

REMARK

•Parameters are set for each axis.

•It is recommended that the parameters be set whenever possible with GX Configurator-QP. Execution by sequence program uses many sequence programs and devices. The execution becomes complicated, and the scan times will increase.

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