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Chapter 9 Major Positioning Control
Setting method for the current value changing function
The following shows an example of a sequence program and data setting to
change the current value to a new value with the positioning start signal. (The
"
Md.20
Current feed" value is changed to "5000.0
μ
m" in the example shown.)
(1) Set the following data.
(Set with the sequence program shown in (3), while referring to the start time
chart shown in (2).)
Buffer memory address
Setting item
Setting
value
Setting details
QD77MS2
QD77MS4
QD77MS16
Cd.3
Positioning start No. 9003 Set the start No. "9003" for the new current value. 1500+100n 4300+100n
Cd.9
New current value 50000
Set the new "
Md.20
Current feed value".
1506+100n
1507+100n
4306+100n
4307+100n
(Note): Refer to Section 5.7 "List of control data" for details on the setting details.
(2) The following shows a start time chart.
[QD77MS4 operation example]
Positioning start signal
PLC READY signal
QD77 READY signal
Start complete signal
BUSY signal
Positioning complete signal
9003
V
t
Error detection signal
50000
Start of data No. 9003
Data No. during positioning execution
Address during positioning execution
Md.20 Current feed value
Cd.3 Positioning start No.
50000
[Y10]
[Y0]
[X0]
[X10]
[XC]
[X14]
[X8]
Cd.9 New current value
(Note): Refer to Section 3.3 for input/output signal of QD77MS16.
Fig. 9.21 Changing to a new current value using the start No. (No. 9003) for a current value changing
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