Creating A Program To Enable/Disable The Inching Operation - Mitsubishi Electric QD77MS User Manual

11.3.4 Creating a program to enable/disable the inching operation

Setting item
Inching movement
[Cd.16]
amount
: Refer to Section 5.7 "List of control data" for information on setting details.
Signal name
PLC READY signal
READY signal
All axis servo ON
Synchronization flag
Axis stop signal
Interface
signal
Start complete signal
BUSY signal
Positioning complete
signal
Error detection signal
M code ON signal
Forced stop input signal
Stop signal
External
signal
Upper limit (FLS)
Lower limit (RLS)
A sequence program must be created to execute an inching operation. Consider the
"required control data setting", "start conditions", and "start time chart" when creating
the program.
The following shows an example when an inching operation is started for axis 1. (The
example shows the inching operation when a "10.0 µm" is set in "[Cd.16] Inching
movement amount".)
Required control data setting
The control data shown below must be set to execute an inching operation. The
setting is carried out with the sequence program.
Setting
value
Set the setting value so that the JOG speed
100 limit value is not increased larger than the
maximum output pulse
Start conditions
The following conditions must be fulfilled when starting. The required conditions
must also be assembled in the sequence program, and the sequence program
must be configured so the operation will not start if the conditions are not fulfilled.
ON PLC CPU preparation completed
ON QD77MS preparation completed
ON All axis servo ON
ON
OFF Axis stop signal is OFF
OFF Start complete signal is OFF
OFF QD77MS is not operating
OFF
OFF There is no error
OFF M code ON signal is OFF
ON There is no forced stop input
OFF Stop signal is OFF
ON Within limit range
ON Within limit range
: If the PLC CPU is set to the asynchronous mode in the synchronization setting, this must be
inserted in the program for interlocking. If it is set to the synchronous mode, it must not be
inserted in the program for interlocking because it is turned ON when the PLC CPU executes
calculation.
Setting details
Signal state
Accessible to QD77MS buffer
memory
Positioning complete signal is
OFF
11 - 20
Chapter 11 Manual Control
Buffer memory address
QD77MS2
QD77MS16
QD77MS4
1517+100n 4317+100n
n: Axis No.-1
Device
QD77MS2
QD77MS16
QD77MS4
Y0
X0
Y1
X1
Y4 to Y7 [Cd.180] Axis stop
X10 to X13 [Md.31] Status: b14
XC to XF X10 to X1F
X14 to X17 [Md.31] Status: b15
X8 to XB [Md.31] Status: b13
X4 to X7 [Md.31] Status: b12
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