Rockwell Automation 1747-PT1, D1747NP002 Hand-Held Terminal - Manual (Page 306)

Chapter 21
Move and Logical Instructions
21–6
Or OR Output Instruction
OR
BITWISE INCLUS OR
Source A
B3:0
0001010110100001
Source B B3:1
0010000000100101
Dest B3:2
0011010110100101
(OR)
F1 F2 F3 F4 F5
ZOOM on OR –(OR)– 2.3.0.0.2
NAME: BITWISE INCLUSIVE OR
SOURCE A: B3:0 0001 0101 1010 0001
SOURCE B: B3:1 0010 0000 0010 0101
DEST: B3:2 0011 0101 1010 0101
EDT_DAT
HHT Ladder Display:
HHT Zoom Display:
Ladder Diagrams and APS Displays:
(online monitor mode)
The value at source A is ORed bit by bit with the value at source B and then
stored in the destination.
Truth Table: R = A OR B
A B R
0 0 0
1 0 1
0 1 1
1 1 1
A: Source A bit
B: Source B bit
R: Destination bit
Using Arithmetic Status Bits
C always reset
V always reset
Z set if the result is zero; otherwise reset
S set if the result is negative (most significant bit is set); otherwise reset
Or (OR)