When the input condition is turned on, the instruction after this instruction in the current subroutine is abandoned and jumps directly to the position where the subroutine is called, continuing to execute the instructions after the parent program.

Input/Output	Data Type	operand	Description

command table:

NETWORK 000

LD X001

RET // If the top value of the stack is 1, jump out from here and continue executing the previous level program.

NETWORK 001

LD X002

SUB D0 D1 D2 // If there is no jump above, the program here will continue to execute.

图1 RET