Activating And Deactivating A Step - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Activating and deactivating a step

Activating a step
A step in the SFC program can be activated by either of the following methods.
Item
Transition condition
SFC control instruction
Engineering tool
Deactivating a step
A step in the SFC program can be deactivated by either of the following methods.
Item
Transition condition
Reset step [R]
SFC control instruction
Engineering tool
8 SFC PROGRAM
144
8.7 SFC Program Execution
Method
The transition is checked at the end of the step. If it is
TRUE, the next step is automatically activated.
Activate the step specified by the SET [S/BL\S]
(Activating a step) instruction used in the action of the
SFC program or in another sequence program.
• Activate the specified step by turning on the step relay.
• Activate the selected step from the menu [Debug] 
[Control SFC Steps].
Method
The transition is checked at the end of the step. If it is
TRUE, the current step is automatically deactivated.
Activating this step deactivates the step specified for
attribute target.
Deactivate the step specified by the RST [S/BL\S]
(Deactivating a step) instruction used in the action of the
SFC program or in another sequence program.
• Deactivate the specified step by turning off the step
relay.
• Deactivate the selected step from the menu [Debug] 
[Control SFC Steps].
Remarks


This method is effective for
debugging and test operation.
Remarks

This method is effective to
deactivate HOLD steps [SC, SE,
ST] when the sequence for error
processing is selected in the
selection branch.
When all the active steps in the
specified block are deactivated by
using the RST instruction, the block
also ends.
This method is effective for
debugging and test operation.
Reference
Page 108
Transition
Page 119 SFC
Control Instructions
 GX Works3
Operating Manual
Reference
Page 108
Transition
Page 99 Reset
step [R]
Page 119 SFC
Control Instructions
 GX Works3
Operating Manual