Inching Operation Execution Procedure - Mitsubishi Electric MELSEC-QD75MH1 User Manual

11 MANUAL CONTROL

11.3.2 Inching operation execution procedure

Preparation
STEP 1
Refer to Chapter 5
and Section 11.3.3.
STEP 2
Refer to Section
11.3.4.
STEP 3
Refer to Chapter 6.
STEP 4
Inching operation
start
STEP 5
Monitoring of the
inching operation
STEP 6
Inching operation
stop
The inching operation is carried out by the following procedure.
Set the positioning parameters.
Pr.1 to
Set the" Cd.16 inching movement amount".
(Control data setting)
Create a PLC program in which the "JOG start
signal" is turned ON by an inching operation start
command.
Write the PLC program to the PLC CPU.
Turn ON the JOG start signal of the axis to be started.
Monitor the inching operation status.
Turn OFF the JOG operation start signal that is ON.
End of control
REMARK
• Mechanical elements such as limit switches are considered as already installed.
• Positioning parameter settings work in common for all control using the QD75MH.
One of the following two methods can be used.
<Method 1>
Pr.31 )
Directly set (write) the parameters in the QD75MH using GX
Configurator-QP.
<Method 2>
Set (write) the parameters from the PLC CPU to the QD75MH
using the PLC program (TO command).
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 PLC
program created in STEP 2.
11 - 20
Using GX Developer, set the control data and create a
PLC program for executing the inching
operation.
(Set the control data in the QD75MH buffer memory using the
TO command.)
Write the PLC 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
Forward run JOG start signal Y8 YA
Y9 YB
Reverse run JOG start signal
MELSEC-Q
Axis 3 Axis 4
YC YE
YD YF