Mitsubishi Electronics QD75P, QD75D user manual Inching operation execution procedure

11 MANUAL CONTROL

11.3.2 Inching operation execution procedure

The inching operation is carried out by the following procedure.

MELSEC-Q

Preparation

STEP 1	Set the parameters.
Refer to Chapter 5	)	Pr.1 to	Pr.31 )

and Section 11.3.3.

One of the following two methods can be used. <Method 1>

Directly set (write) the parameters in the QD75 using GX Configurator-QP.

<Method 2>

Set (write) the parameters from the PLC CPU to the QD75 using the sequence program (TO command).

STEP 2

Refer to Section 11.3.4.

Set the " Cd.16 inching movement amount". (Control data setting)

Create a sequence program in which the "JOG start signal" is turned ON by an inching operation start command.

Using GX Developer, set the control data and create a sequence program for executing the inching operation.

(Set the control data in the QD75 buffer memory using the TO command.)

Inching operation start

Monitoring of the inching operation

Inching operation stop

STEP 3

Write the sequence program to the PLC CPU.

Refer to Chapter 6.

STEP 4

Turn ON the JOG start signal of the axis to be started.

STEP 5

Monitor the inching operation status.

STEP 6

Turn OFF the JOG operation start signal that is ON.

Write the sequence program created in STEP 1 and STEP 2 to the PLC CPU using GX Developer.

Turn ON the JOG start signal.

	Axis 1	Axis 2	Axis 3	Axis 4
Forward run JOG start signal	Y8	YA	YC	YE
Reverse run JOG start signal	Y9	YB	YD	YF

One of the following two methods can be used. <Method 1>

Monitor using GX Configurator-QP. <Method 2>

Monitor using GX Developer.

End the inching operation after moving a workpiece by an inching movement amount with the sequence program created in STEP 2.

End of control

REMARK

•Mechanical elements such as limit switches are considered as already installed.

•Parameter settings work in common for all control using the QD75.

11 - 20