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MELSEC-Q

 

6   PLC PROGRAM USED FOR POSITIONING CONTROL 

 

6.5.4 Continuous operation interrupt program 

During positioning control, the control can be interrupted during continuous positioning 
control and continuous path control (continuous operation interrupt function). When 
"continuous operation interruption" is execution, the control will stop when the 
operation of the positioning data being executed ends. To execute continuous 
operation interruption, set "1: Continuous operation interrupt request" for "

Cd.18

 

Interrupt request during continuous operation". 

 

[1]   Operation during continuous operation interruption 

 

Start 

Positioning data No. 10

Positioning data No. 11

Positioning data No. 12

V

t

Stop process when stop command turns ON

Start 

Positioning data No. 10

Positioning data No. 11

Positioning data No. 12

V

t

Stop process at continuous operation 
interrupt request

Cd.18  is set "1"

ON

Stop command

ON

[For Stop comand ON]

[For  Cd.18  is set "1" ]

 

 

Fig. 6.12 Operation during continuous operation interruption 

 
 

[2]   Restrictions 

 

(1)  When the "continuous operation interrupt request" is executed, the positioning 

will end. 
Thus, after stopping, the operation cannot be "restarted". 
When "

Cd.6

Restart command" is issued, a warning "Restart not possible" 

(warning code: 104) will occur. 

(2)  Even if the stop command is turned ON after executing the "continuous 

operation interrupt request", the "continuous operation interrupt request" 
cannot be canceled. 
Thus, if "restart" is executed after stopping by turning the stop command ON, 
the operation will stop when the positioning data No. where "continuous 
operation interrupt request" was executed is completed.