Справочник Пользователя для Mitsubishi Electronics QnUCPU

CHAPTER9 DEVICES

9.

6 

 I

ndex 

Regist

er 
(Z

)/S

tandard

 Dev

ic

e

 Res

is

ter

 (Z
)

9.

6.

3 

 Sw

itching f

rom
 the scan exec

ut

ion t

ype progr

am t

o

 t

he int

e

rr

upt
/fixed sc

an 
ex

ecut

ion t
ype 

program

9

 

-

 

49

9.6.3  Switching from the scan execution type program to the interrupt/fixed scan 

execution type program

The CPU module performs the following when switching from the scan execution type program to the interrupt/

fixed scan execution type program.

 • Saving and restoring the index register data
 • Saving and restoring block numbers of the file register

Saving and restoration setting can be enabled in the PLC system tab of the PLC parameter dialog box. 
To disable writing to the index register in the interrupt/fixed scan execution type program, select "High speed 
execution" in the Interrupt program/Fixed scan program setting area.
If this setting is enabled, the program will switch faster than before.