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MELSEC-Q
 
6   PLC PROGRAM USED FOR POSITIONING CONTROL 
 
6.5.2 Start details setting program 
This program sets which control, out of "OPR", "major positioning control" or "high-level 
positioning control" to execute. For " high-level positioning control", "fast OPR", "speed-
position switching control" and "position-speed switching control", add the respectively 
required PLC program. 
(Refer to "Chapter 10" for details on starting the " high-level positioning control.) 
 
 Procedures for setting the starting details 
 
(1)  Set the "positioning start No." corresponding to the control to be started in  
"
Cd.3
Positioning start No.". 
 
Buffer memory address 
Setting item 
Setting 
value 
Setting details 
Axis 1  Axis 2  Axis 3  Axis 4 
Cd.3
 
Positioning start No. 
 
1 to 600 
:  Positioning data No. 
9001 : 
Machine 
OPR 
9002 : 
Fast 
OPR 
9003 
:  Current value changing 
9004 : 
Simultaneous 
start 
7000 to 7004  :  Block No. 
(For "high-level positioning 
control") 
1500 1600 1700 1800 
 
 Refer to Section 5.7 "List of control data" for details on the setting details. 
 
(2)  For "high-level positioning control", set the "positioning start point No." of the 
block to be started in "
Cd.4
Positioning start point No.". 
 
Buffer memory address 
Setting item 
Setting 
value 
Setting details 
Axis 1  Axis 2  Axis 3  Axis 4 
Cd.4
 
Positioning start point No. 
 
1 to 50 :  Point No. of block start data 
1501  1601  1701  1801 
 
 Refer to Section 5.7 "List of control data" for details on the setting details. 
 
(3)  Set the following control data for "speed-position switching control (INC 
mode)". 
(Set "
Cd.23
Speed-position switching control movement amount change 
register as required". Setting is not required in the ABS mode.) 
 
Buffer memory address 
Setting item 
Setting 
value 
Setting details 
Axis 1  Axis 2  Axis 3  Axis 4 
Cd.23
 
Speed-position switching 
control movement amount 
change register 
 
Set the new value when the position control's 
movement amount is to be changed during 
speed control. 
1526 
1527 
1626 
1627 
1726 
1727 
1826 
1827 
Cd.24
 
Speed-position switching 
enable flag 
When "1" is set, the speed-position switching 
signal will be validated. 
1528 1628 1728 1828 
 
 Refer to Section 5.7 "List of control data" for details on the setting details.