Mitsubishi Electronics Mitsubishi Digital Electronics Video Gaming Accessories FX3G ユーザーズマニュアル

FX

3G

/FX

3U

/FX

3UC

 Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

7 Basic Instruction

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.

→ For the number of instruction steps, refer to Section 7.15.

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

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.

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

3

S

4

ORI

3 3

S

1

3

S

1

S

2

S

3

S

4

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