Bitwise OR OR

How it works

While the rung is true, each bit of Dest is on where that bit is on in A, in B, or in both. A false rung changes nothing.

How it's used

Use OR to turn bits on without changing the others.

Bit 2 turned on. Bit 0 stayed on: 1 became 5.

Operands

Common mistakes

• Using it as a rung branchOR here writes a DINT word. For either-or logic on a rung, use a branch.