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MELSEC-A
10 ADVANCED POSITIONING CONTROL
10.5.2 Example of a start program for advanced positioning control
The following shows an example of a start program for advanced positioning control in
which the 1st point "start block data" of axis 1 is started. (The block No. is regarded as
"7000".)
Control data that require setting
The following control data must be set to execute advanced positioning control.
The setting is carried out using a sequence program.
Buffer memory address
Setting item
Setting
value
Setting details
Axis 1 Axis 2 Axis 3
Cd.11
Positioning start
No.
7000
Set "7000" to indicate control using "start block
data".
Note that "7000" to "7010" can be set when
setting the "7001" to "7010" data using the
AD75 software package.
1150 1200 1250
Cd.31
Positioning
starting point No.
1
Set the point No. of the "start block data" to be
started.
1178 1228 1278
* Refer to section "5.7 List of control data" for details on the setting details.
Start conditions
The following conditions must be fulfilled when starting the control. The required
conditions must also be integrated into the sequence program, and configured so
the control does not start unless the conditions are fulfilled.
Device
Signal name Signal state
Axis 1 Axis 2 Axis 3
All axes servo ON signal ON Servo operation possible Y15
PLC READY signal ON PLC CPU preparation completed Y1D
AD75 READY signal OFF AD75 preparation completed X0
Axis stop signal OFF Axis stop signal is OFF Y13 Y14 Y1C
Start complete signal OFF Start complete signal is OFF X1 X2 X3
BUSY signal OFF BUSY signal is OFF X4 X5 X6
Error detection signal OFF There is no error XA XB XC
Interface
signal
M code ON signal OFF M code ON signal is OFF XD XE XF
Stop signal OFF Stop signal is OFF –
Upper limit (FLS) ON Within limit range –
External
signal
Lower limit (RLS) ON Within limit range –
Monitor
data
Servo ON ON Servo ON is ON
Md.116
Servo
status:b1
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