OR

The OR logic function block can evaluate the state of two integers to see if either input A or B is true. If input A OR B is true - the output C will be true (logic 1). If both input A and B are true (logic 1) - the output C will also be true (logic 1).

 The input values in an OR function may be:

• Memory Integer (MI)

• Memory Long Integer (ML)

• Double Word (DW)

• System Operands:(SI) (SL) (SDW)

• Network System Integer (NSI)

• Constant Value #

With the exception of Constant Value, any of these operands may be used to contain the output value.

The function is located under the Logic menu on the Ladder toolbar.