163
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
7 Basic Instruction
7.4 OR, ORI
1
In
troduct
io
n
2
Ov
e
rv
ie
w
3
In
st
ru
ct
ion
Li
st
4
D
evi
ce
s
in
De
ta
il
5
Speci
fied t
h
e
D
evi
ce &
C
onst
a
nt
6
Bef
o
re
Pr
ogr
a
m
m
ing
7
Bas
ic
In
st
ru
cti
o
n
8
FNC0
0
-FNC0
9
P
ro
g
ra
m F
lo
w
9
FNC1
0
-FNC1
9
M
ov
e
&
C
om
par
e
10
FNC
20-
FNC
2
9
Ar
ith.
&
Logi
c
O
per
at
io
n
7.4
OR, ORI
Outline
OR and ORI instructions are used to connect one contact in parallel.
If two or more contacts are connected in series, use ORB instruction described later to connect such a serial
circuit block to another circuit in parallel.
A step containing OR or ORI instruction is connected in parallel to a preceding step containing LD or LDI
instruction. There is no limitation in the number of times of parallel connection.
1. Instruction format
→
For the number of instruction steps, refer to Section 7.15.
2. Applicable devices
S
1: Special auxiliary relays (M) and 32-bit counters (C) cannot be indexed with index registers (V and Z).
S
2: State relays (S) and "D
.b" cannot be indexed with index registers (V and Z).
Explanation of function and operation
1. OR instruction (parallel connection of NO (normally open) contacts)
Instruc-
tion
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS
T
C
D
R U
\G
V
Z Modify K
H
E
"
"
P
OR
3 3
S
1
3
S
1
S
2
S
2
3
ORI
3 3
S
1
3
S
1
S
2
S
2
3
OR
OR
Basic Instruction
OR
−
Continuous
Operation
Pulse (Single)
Operation
Mnemonic
Operation Condition
ORI
OR Inverse
Basic Instruction
ORI
−
Continuous
Operation
Pulse (Single)
Operation
Mnemonic
Operation Condition
Timing chart
OR instruction
LD instruction
X000
Y000
X001
Circuit program
List program
LD
OR
OUT
0000
0001
0002
X000
X001
Y000
Y000
X001
X000
ON
ON
ON
ON
ON
ON
ON