OTL is one of the building blocks of a ladder diagram. The
OTL block implements the
OTL ladder logic 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.
Operand Tag— Bit to be tested
Specify the data bits to be modified. Data bits are specified in the format of
tags. In Ladder Diagrams, tags (variables) are used for
representing all inputs, outputs, and internal memory with attributes such as
Initial Value, and
size. To change the attributes of the
Tag, open the Program Variables table within the
Ladder Diagram Program block.
|Type: character vector|
|Value: character vector|