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199
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
7 Basic Instruction
7.4 OR, ORI
1
Int
roduct
ion
2
O
ver
view
3
In
str
uc
tion
Li
st
4
D
evices
in D
etail
5
Spec
ified t
he
D
evice &
C
onst
ant
6
Bef
ore
Pr
ogr
am
m
ing
7
B
asic
In
st
ru
ct
io
n
8
FN
C
00-FN
C
09
P
rogr
am
F
low
9
FN
C
10
-FN
C
19
Mo
ve
&
Co
mp
are
10
FNC2
0-F
NC2
9
Ar
ith.
&
Logic
O
per
ation
5. Bit specification of data register (D)
*1
A bit in data register (D) can be specified as a device used in OR and ORI instructions.
When specifying a bit in data register, input "."
after a data register (D) number, and then
input a bit number (0 to F) consecutively.
Only 16-bit data registers are available.
Specify a bit number as "0, 1, 2, ... 9, A, B, ...
F" from the least significant bit.
Example:In the example shown on the left,
OR contact is set to ON (becomes
conductive) or OFF (becomes non-
conductive) by the bit 3 of D0.
*1.
This function is supported only in FX
3U
/FX
3UC
PLCs.
Errors
• When an I/O number used in OR or ORI instruction does not exist due to indexing, M8316 (Non-existing I/
O specification error) turns ON.
• When the device number of a device (M, T or C) other than I/O used in OR or ORI instruction does not
exist due to indexing, an operation error (error code: 6706) occurs.
Circuit program
List program
LD
OR
OUT
0000
0001
0004
X000
D0.3
Y000
Y000
D0.3
X000