Creating A Program To Enable/Disable The Inching Operation - Mitsubishi QD75P1N User Manual

11 MANUAL CONTROL

11.3.4 Creating a program to enable/disable the inching operation

Setting item
Cd.16 Inching movement
amount
Refer to Section 5.7 "List of control data" for information on setting details.
Interface
signal
External
signal
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 "
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 command
pulse is not increased larger than the maximum
output pulse.
(The max. output pulse
100
QD75D N: 4Mpps
QD75D : 1Mpps
QD75P N/QD75P : 200kpps)
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.
Signal name
PLC READY signal
QD75 READY signal
Synchronization flag
Axis stop signal
Start complete signal
BUSY signal
Positioning complete
signal
Error detection signal
M code ON signal
Drive unit READY signal ON Drive unit preparation completed
Stop signal
Upper limit (FLS)
Lower limit (RLS)
If the CPU module 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 CPU module executes
calculation.
Setting details
Signal state
CPU module preparation
ON
completed
ON QD75 preparation completed
Accessible to QD75 buffer
ON
memory
OFF Axis stop signal is OFF
OFF Start complete signal is OFF
OFF QD75 is not operating
Positioning complete signal is
OFF
OFF
OFF There is no error
OFF M code ON signal is OFF
OFF Stop signal is OFF
ON Within limit range
ON Within limit range
11 - 21
MELSEC-Q
Cd.16
Inching
Buffer memory address
Axis Axis Axis Axis
1 2 3 4
1517 1617 1717 1817
Device
Axis Axis Axis Axis
1 2 3 4
Y0
X0
X1
Y4 Y5 Y6 Y7
X10 X11 X12 X13
XC XD XE XF
X14 X15 X16 X17
X8 X9 XA XB
X4 X5 X6 X7
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