Bradley Smoker PLC-5 user manual Logical Instructions

D-14Instruction Set Quick Reference

Logical Instructions

Instruction Description

AND
BITWISE AND
Source A	D9:3
	3F37
Source B	D9:4
	00FF
Dest	D9:5
	0037

AND

When the input conditions are true, the controller performs an AND operation (bit-by-bit) between Source A (D9:3) and Sourc B (D9:4) and stores the result in the Destination (D9:5). The truth table for an AND operation is:

Source ASource BResult 000 100 010 111

NOT
NOT
Source A	D9:3
	00FF
Dest	D9:5
	FF00

NOT Operation	When the input conditions are true, the controller performs a
	NOT (takes the opposite of) operation (bit-by-bit) on the Sourc
	(D9:3) and stores the result in the Destination (D9:5). The trut
	table for a NOT operation is:
	SourceDestination
	01
	10

OR

BITWISE INCLUSIVE OR

Source A	D9:3
	3F37
Source B	D9:4
	00FF
Dest	D9:5
	3FFF

OR

When the input conditions are true, the controller performs an OR operation (bit-by-bit) between Source A (D9:3) and Source (D9:4) and stores the result in the Destination (D9:5). The trut table for an OR operation is:

Source ASource BResult 000 101 011 111

XOR

BITWISE EXCLUSIVE OR

Source A	D9:3
	3F37
Source B	D9:4
	3F37
Dest	D9:5
	0000

Exclusive OR XOR

When the input conditions are true, the controller performs an exclusive OR operation (bit-by-bit) between Source A (D9:3) an Source B (D9:4) and stores the result in the Destination (D9:5) The truth table for an XOR operation is:

Source ASource BResult 000 101 011 110

Status	Descriptio
Bit
C	always
V	always
Z	sets if the result is zero; otherwise

Ssets if the most significant bit (bit 15 for decimal or bit 17 for octal) is set (1); otherwise resets

Publication 1785-UM012D-EN-P - July 2005