Output Latch
OTL
is one of the building blocks of a ladder diagram. The
OTL block implements the OTL
ladder instruction. When the
rung condition is true, the block sets the operand tag (data bit) to true. The data bit
remains true until it is cleared, typically by an OTU block. When the rung
condition is changed to false, the block does not change the status of the data bit.