Справочник Пользователя для Mitsubishi Electronics FX

FX Series Programmable Controllers

Execution Times And Instructional Hierarchy 7

7-12

7.3

Hierarchical Relationships
Of Basic Program Instructions

T h e f o l l o w i n g t a b l e i d e n t i f i e s a n ' i n c l u s i v e
relationship'. This means the secondary program
construction is included within the complete
operating boundaries of the primary program
construction, e.g.:

: Instruction combination is acceptable - for restrictions see appropriate note

: Instruction combination is not allowed - bracketed number is the error code

: Instruction combination is not recommended for use even though there is no operational

error

The combination of instructions with an 'inclusive relationship' is allowable. However please be
aware of the following exceptions:

1) MC-MCR and STL-RET constructions cannot be used within FOR-NEXT loops, P-SRET or

I-IRET subroutines.

2) Program flow may not be discontinued by using any of the following methods while inside

MC-MCR, FOR-NEXT, P-SRET, I-IRET program constructions, i.e. using interrupts (I),
IRET, SRET, FEND or the END instruction is not allowed.

Primary

Program

Construction

Secondary program construction

MC-MCR

CJ - P

EI - DI

FOR -

NEXT

STL -

RET

P - SRET

I - IRET

FEND -

END

MC - MCR

- 8

nest lev-

els

- (6608)

CJ - P

- (6701)

EI - DI

FOR - NEXT

-(6607)

- 5

nest lev-

els

- (6607)

STL - RET

- (6605)

(within 1

STL step)

- (6605)

P - SRET

- (6606)

- (6709)

I - IRET

- (6606)

FEND - END

0 - FEND

- (6606)

0 - END

(no FEND)

- (6606)

0(S)

FX FX

(2C)

2N(C)

FOR

Primary
program construction

Secondary
program construction