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MELSEC-Q
 
9   MAJOR POSITIONING CONTROL 
 
9.2.23 LEND 
The LEND is used to return the operation to the top of the repeat (LOOP to LEND) 
loop. 
 
 Operation 
 
When the repeat cycle designated by the LOOP becomes 0, the loop is 
terminated, and the next positioning data No. processing is started. (The operation 
pattern, if set to "Positioning complete", will be ignored.) 
When the operation is stopped after the repeat operation is executed by 
designated cycles, the dummy positioning data (for example, incremental 
positioning without movement amount) is set next to LEND.  
 
Positioning data 
No. 
Operation pattern 
Control system 
Conditions 
Operation 
1 Continuous 
control 
ABS2 
 
Positioning 
complete 
LOOP 
Number of loop 
cycles: 2 
Continuous path 
control 
ABS2  
4 Continuous 
control 
ABS2 
 
Positioning 
complete 
LEND  
Positioning 
complete 
ABS2  
Executed in the 
order of the 
positioning data 
No. 1   2   3   
4   5   2   3   
4   5   6. 
(The operation 
patterns of the 
positioning data 
Nos. 2 and 5 are 
ignored.) 
 
 Positioning data setting examples 
 
The following table shows the setting examples when "LEND" is set in positioning 
data No. 8 of axis 1. 
 
Setting item 
Setting example 
Setting details 
 Da.1  Operation pattern 
– 
Setting not required. (Setting value is ignored.) 
 Da.2  Control system 
LEND 
Set the LEND. 
 Da.3  Acceleration time No. 
– 
Setting not required. (Setting value is ignored.) 
 Da.4  Deceleration time No. 
– 
Setting not required. (Setting value is ignored.) 
 Da.5  
Axis to be 
interpolated 
– 
Setting not required. (Setting value is ignored.) 
 Da.6  
Positioning address/ 
movement amount 
– 
Setting not required. (Setting value is ignored.) 
 Da.7  Arc address 
– 
Setting not required. (Setting value is ignored.) 
 Da.8  Command speed 
– 
Setting not required. (Setting value is ignored.) 
 Da.9  Dwell time 
– 
Setting not required. (Setting value is ignored.) 
Ax
is 1   Positioning data N
o. 8 
 Da.10 
M code 
– 
Setting not required. (Setting value is ignored.) 
    Refer to Section 5.3 "List of positioning data" for information on the setting details. 
 
 Restrictions 
 
(1) Ignore the "LEND" before the "LOOP" is executed.