Mitsubishi Electronics FX3G User Manual
191
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
7 Basic Instruction
7.4 OR, ORI
1
Introdu
ction
2
Ov
ervi
ew
ew
3
Instruction
Li
st
4
D
evices
in Det
ai
l
5
Specifi
ed the
De
vice
&
C
onst
ant
ant
6
Bef
ore
ore
Pr
og
ra
mmi
ng
ng
7
Bas
ic
ic
Instruction
8
FN
C00-FN
C00-FN
C0
9
Program Fl
ow
9
FNC
10-FN
C19
Mov
e & Com
e & Com
pare
10
FNC
20-FNC
29
Arith. & Lo
gi
c
Operati
on
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.
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 7.16.
2. Applicable devices
S1: Special auxiliary relays (M) and 32-bit counters (C) cannot be indexed with index registers (V and Z).
S2: State relays (S) cannot be indexed with index registers (V and Z).
S3: "D .b" is available only in FX
S2: State relays (S) cannot be indexed with index registers (V and Z).
S3: "D .b" is available only in FX
3U
and FX
3UC
PLCs. However, index modifiers (V and Z) are not available.
S4: This function is supported only in FX
3U
/FX
3UC
PLCs.
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
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
S
1
S
1
S
2
S
3
S
4
ORI
S
1
S
1
S
2
S
3
S
4
OR
OR
Basic Instruction
OR
−
Continuous
Operation
Pulse (Single)
Pulse (Single)
Operation
Mnemonic
Operation Condition
ORI
OR Inverse
Basic Instruction
ORI
−
Continuous
Operation
Pulse (Single)
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