Nematron Pointe Controller - Manual (Page 428)

Appendix C: Ladder Diagram Block Reference Pointe Controller User Guide
426
All valid Sub-Ladders in the current project will be listed in the dialog. A selection
may be made from the list or entered directly into the LD Name field.
The OK button will be enabled when a valid selection has been made or entered.
Click it to save your selection and close the dialog.
C.8.2 Return to main diagram (RETN)
When used in a Sub-Ladder, this block stops execution of the Sub-Ladder and
returns to the Ladder Diagram which
called it. Use of this block is required only if
the logic flow of your program requires an early return from the Sub-Ladder (i.e.,
the Sub-Ladder must be aborted before its normal end). Use of the block is
optional in the last rung of a Sub-Ladder.
Select the tool (from the Flow Control Blocks toolbar) and click on a ladder
rung to insert the following block:
This block cannot be configured.
NOTE: This block can only be used in a properly defined Sub-Ladder . If a Return
block is inserted in a regular Ladder Diagram, it will be detected and reported
when the diagram’s
integrity is checked .
Functional Description
This block does not pass the rung state in any situation. When the input state
from the left becomes on, execution of the Sub-Ladder is immediately stopped
and returned to the Ladder Diagram which originally called the Sub-Ladder.
Configuration Reference
The are no configurable parameters for this block.