Bitwise AND AND

How it works

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

How it's used

Use AND with a mask to keep only some bits of a word.

Mask 15 keeps the lowest four bits: 182 becomes 6.

Operands

Common mistakes

• Using BOOL tagsWord logic works on whole DINT words, 32 bits at once.