Mitsubishi FX1N Series Programming Manual

FX Series Programmable Controlers Applied Instructions 5
5-152
5.12.1 SWAP (FNC 147)
Contents:
The upper byte and the lower byte of the source
device are swapped.
This instruction is equivalent to operation 2 of FNC
17 XCH (see page 5-21).
Points to note:
a) In single word (16 bit) operation the upper and lower byte of the source device are
exchanged.
b) In double word (32 bit) operation the upper and lower byte of each or the two 16 bit devices
are exchanged.
Result of DSWAP(P) D10:
c) If the operation of this instruction is allowed to execute each scan, then the value of the
source device will swap back to its original value every other scan. The use of the pulse
modifier or an interlock program is recommended.
Mnemonic Function
Operands
Program steps
S
SWAP
FNC 147
(Byte
Swap)

The high and low
byte of the
designated
devices are
exchanged
KnY, KnM, KnS, T, C, D, V, Z SWAP,SWAPP
:5steps
DSWAP,
DSWAPP:
9steps
FX 1S
FX 1N FX 2N
FX 2NC
PULSE-P 16 BIT OPERATION 32 BIT OPERATION
X34
D10
SWAPP
D10
Byte 1
Values are in Hex for clarity
Byte 2
D11
Byte 1
Byte 2
Before DSWAP After DSWAP
1F H
8B H
C4 H
35 H
1F H
8B H
C4 H
35 H

Mitsubishi FX1N Series Specifications

General

Programming Language	Ladder Logic
Output Type	Relay, Transistor
Operating Temperature	0 to 55°C
Power Supply	100-240V AC or 24V DC
Program Capacity	8K steps
Communication Ports	RS-422
Data Memory	8000 words
High-speed Counters	Up to 6 channels
Expansion Modules	Available
Pulse Output	2 points