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Chapter 10 High-Level Positioning Control
10.6.2 Example of a start program for high-level positioning control
The following shows an example of a start program for high-level positioning control in
which the 1st point " block start 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 high-level positioning control.
The setting is carried out using a sequence program.
Buffer memory address
Setting item
Setting
value
Setting details
QD77MS2
QD77MS4
QD77MS16
Cd.3 Positioning start No. 7000
Set "7000" to indicate control using " block
start data".
1500+100n 4300+100n
Cd.4
Positioning starting
point No.
1
Set the point No. of the " block start data" to
be started.
1501+100n 4301+100n
n: Axis No.-1
(Note): 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
QD77MS2
QD77MS4
QD77MS16
PLC READY signal
ON PLC CPU preparation completed
Y0
QD77 READY signal
ON QD77MS preparation completed
X0
All axis servo ON
ON All axis servo ON
Y1
Synchronization flag
ON
QD77MS buffer memory
The access is possible.
X1
Axis stop signal
OFF Axis stop signal is OFF
Y4 to Y7
Cd.180
Axis stop
Start complete signal
OFF Start complete signal is OFF
X10 to X13
Md.31
Status: b14
BUSY signal
OFF BUSY signal is OFF
XC to XF
X10 to X1F
Error detection signal
OFF There is no error
X8 to XB
Md.31
Status: b13
Interface
signal
M code ON signal
OFF M code ON signal is OFF
X4 to X7
Md.31
Status: b12
Forced stop input signal ON There is no forced stop input
–
Stop signal
OFF Stop signal is OFF
–
Upper limit (FLS)
ON Within limit range
–
External
signal
Lower limit (RLS)
ON Within limit range
–
Содержание MELSEC-Q QD77MS
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