Chapter 4: RLL Programming
Output Instructions
Set Output Instruction (Latch) (
앖
)
A set output instruction, or Latch, turns ON an output coil (Q) or an auxiliary contact (M) when the
preceding input contact transitions from OFF to ON. Once the output is ON or set, it will remain ON until
it is reset using the Reset output instruction. It is not necessary for the preceding input contact
controlling the Set output instruction to remain ON.
Reset Output Instruction (Unlatch) (
앗
)
A reset output instruction, or Unlatch, turns OFF a previous set output coil (Q) or an auxiliary contact (M)
when the preceding input contact transitions from OFF to ON. Once the output is OFF or reset, it will
remain OFF until it is reset using another output instruction. It is not necessary for the preceding input
contact controlling the Reset output instruction to remain ON.
32
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