Advanced Function Instruction
7-54
FUN 71
NEXT
LOOP END
FUN 71
NEXT
Ladder symbol
71.
NEXT
z This instruction and the FOR instruction together form a program loop. The instruction itself has no input
control, is connected directly to the power line, and cannot be in series with any conditions.
z When PLC has not yet entered the loop (has not yet executed to the FOR instruction, or has executed but
then jumped out), but the NEXT instruction is reached, then PLC will not take any action, just as if this
instruction did not exist.
z For the usage of this instruction please refer to the explanations for the FOR instruction on the preceding
page.
To Next Page
Loading...
