Справочник Пользователя для Mitsubishi Electronics FX2NC

FX Series Programmable Controllers

Basic Program Instructions 2

2-22

2.19

No Operation

Basic points to remember:

Writing NOP instructions in the middle of a program minimizes step number changes
when changing or editing a program.

It is possible to change the operation of a circuit by replacing programmed instructions
with NOP instructions.

Changing a LD, LDI, ANB or an ORB instruction with a NOP instruction will change the
circuit considerably; quite possibly resulting in an error being generated.

After the program ‘all clear operation’ is executed, all of the instructions currently in the
program are over written with NOP’s.

Mnemonic

Function

Format

Devices

Program steps

NOP
(No Operation)

No operation or
null step

N/A

0(S)

FX FX

(2C)

2N(C)