Omron SYSMAC CP CP1E-N@@D@-@ Instrukcja Użytkownika Pobierz pdf (Strona 328)

2 Instructions

2-292

CP1E CPU Unit Instructions Reference Manual(W483)

Precautions

• The subroutine number must be unique

for each subroutine. You cannot use the

same number for more than one sub-

routine.

• Each subroutine must have a unique

subroutine number. Do not use the

same subroutine number for more than

one subroutine.

• Observe the following precautions

when using differentiated instructions

(DIFU(013), DIFD(014), or up/down dif-

ferentiated instructions) in subroutines.

• The operation of differentiated

instructions in a subroutine is unpre-

dictable if a subroutine is executed

more than once in the same cycle.

In the following example, subroutine

1 is executed when CIO 0.00 is ON

and CIO 1.00 is turned ON by

DIFU(013) when CIO 0.01 has

gone from OFF to ON. If CIO 0.01

is ON in the same cycle, subroutine

1 will be executed again but this

time DIFU(013) will turn CIO 1.00

OFF without checking the status of

CIO 0.01.

• In contrast, a differentiated instruc-

tion (UP, DOWN, DIFU(013) or

DIFD(014)) would maintain the ON

status if the instruction was exe-

cuted and the output was turned ON

but the same subroutine was not

called a second time.

• In the following example, subroutine

1 is executed if CIO 0.00 is ON.

Output CIO 1.00 is turned ON by

DIFU(013) when CIO 0.01 has

gone from OFF to ON. If CIO 0.00

is OFF in the following cycle, sub-

routine 1 will not be executed again

and output CIO 1.00 will remain ON

• SBS(091) will be treated as

NOP(000) when it is within a pro-

gram section interlocked by IL(002)

and ILC(003).

SBS

1

Subroutine

1

0.00

SBS

1

0.01

SBN

1

DIFU

1.00

0.01

RET

1

3 5

4

2

The subroutine

is executed

again.

SBS

1

0.00

SBN

1

DIFU

1.00

0.01

RET

1

3

The subroutine is

not executed in

following cycles.

2

1 2 ... 323 324 325 326 327 328 329 330 331 332 333 ... 466 467

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