137
Sequence Control Instructions Section 3-4
It is often more efficient to switch a program section with IL(002) and
ILC(003). When several processes are controlled with the same execution
condition, it takes fewer program steps to put these processes between
IL(002) and ILC(003).
The following table shows the differences between IL(002)/ILC(003) and
JMP(004)/JME(005).
Flags
Precautions The cycle time is not shortened when a section of the program is interlocked
because the interlocked instructions are executed internally.
The operation of DIFU(013), DIFD(014), and differentiated instructions is not
dependent solely on the status of the execution condition when they are pro-
grammed between IL(002) and ILC(003). Changes in the execution condition
for DIFU(013), DIFD(014), or a differentiated instruction are not recorded if the
DIFU(013) or DIFD(014) is in an interlocked section and the execution condi-
tion for the IL(002) is OFF.
Item Treatment in
IL(002)/ILC(003)
Treatment in
JMP(004)/JME(005)
Instruction execution Instructions other than OUT, OUT NOT,
OUTB(534), and timer instructions are
not executed.
No instructions are executed.
Output status in instructions Except for outputs in OUT, OUT NOT,
OUTB(534), and timer instructions, all
outputs retain their previous status.
All outputs retain their previous status.
Bits in OUT, OUT NOT, OUTB(534) OFF All outputs retain their previous status.
Status of timer instructions
(except (TTIM(087), TTIMX(555),
MTIM(543), and MTIMX(554))
Reset Operating timers (TIM, TIMX(550),
TIMH(015), TIMHX(551), TMHH(540),
TMHHX(552) only) continue timing
because the PVs are updated even
when the timer instruction is not being
executed.
Name Label Operation
Error Flag ER OFF
Equals Flag = OFF or unchanged
Negative Flag N OFF or unchanged
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