11 - 18
Chapter 11 Manual Control
11.3.2 Inching operation execution procedure
The inching operation is carried out by the following procedure.
Set the parameters.
( to )
Pr.1
Pr.31
One of the following two methods can be used.
<Method 1>
Directly set (write) the parameters in the QD77MS using
GX Works2.
<Method 2>
Set (write) the parameters from the PLC CPU to the QD77MS
using the sequence program (TO command).
STEP 1
Preparation
Refer to Chapter 5
and Section 11.3.3.
End of control
STEP 2
Refer to Section
11.3.4.
STEP 3
STEP 4
Monitor using GX Works2.
STEP 5
Write the sequence program created in STEP1
and STEP2 to the PLC CPU.
Turn ON the JOG start signal of the axis to be
started.
Monitoring of the
inching operation
STEP 6
Turn OFF the JOG start signal that is ON.
Monitor the inching operation status.
Refer to Chapter 6.
Inching operation
start
Inching operation
stop
End the inching operation after moving a workpiece
by an inching movement amount with the sequence
program created in STEP 2.
Create a sequence program in which the "JOG
start signal" is turned ON by an inching
operation start command.
Create a sequence program in which the
" Inching movement amount" is set.
(Control data setting)
Cd.16
Turn ON the JOG start signal.
QD77MS2/QD77MS4
Y8, YA, YC, YE
Y9, YB, YD, YF
Forward run JOG
start signal
Reverse run JOG
start signal
QD77MS16
Cd.181 Forward run
JOG start signal
Cd.182 Reverse run
JOG start signal
REMARK
•
Mechanical elements such as limit switches are considered as already installed.
•
Parameter settings work in common for all control using the QD77MS.
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