xLadder user manual-V2.0.0.6

When the bit is equal to 1, the normally open contact

is closed, and the normally closed contact is

disconnected.

When the bit is equal to 0, the normally open contact

is disconnected , and the normally closed contact is

closed .

In STL, the normally open contact is represented by

“LD”, "And" and "Or" instructions.

In STL, normally closed contacts are represented by

"NOT", "NOT AND" and "NOT OR" instructions.

Example:

75

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