Allen-Bradley MicroLogix 1200 - Chapter 12 Using Logical Instructions

1 Publication 1762-RM001C-EN-P
Chapter 12
Logical Instructions
The logical instructions perform bit-wise logical operations on individual
words.
Using Logical
Instructions
When using logical instructions, observe the following:
•
Source and Destination must be of the same data size (i.e. all words or
all long words).
•
Source A and Source B can be a constant or an address, but both
cannot be constants.
•
Valid constants are -32768 to 32767 (word) and -2,147,483,648 to
2,147,483,647 (long word).
Instruction Used To: Page
AND - Bit-Wise AND Perform an AND operation 12-3
OR - Logical OR Perform an inclusive OR operation 12-4
XOR - Exclusive OR Perform an Exclusive Or operation 12-5
NOT - Logical NOT Perform a NOT operation 12-6
IMPORTANT
Do not use the High Speed Counter Accumulator
(HSC.ACC) for the Destination parameter in the AND,
OR, and XOR instructions.