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Sequence Control Instructions Section 3-4
Note The MILR(518) interlocks operate in the same way if there is another
MILH(517) or MILR(518) instruction with the same interlock number between
an MILR(518) and MILC(519) pair.
If there is an MILC(519) instruction with a different interlock number between
an MILH(517)/MILR(518) and MILC(519) pair, that MILC(519) instruction will
be ignored.
If there is an MILH(517) instruction between an IL(002) and ILC(003) pair and
the IL(002) interlock is engaged, the MILH(517) instruction has no effect. In
this case, the program section between IL(002) and ILC(003) will be inter-
locked.
If the IL(002) interlock is not engaged and the MILH(517) instruction’s execu-
tion condition (b in this case) is OFF, the program section between MILH(517)
and ILC(003) will be interlocked.
If there is an MILC(519) instruction between an IL(002) and ILC(003) pair, that
MILC(519) instruction will be ignored and the entire program section between
IL(002) and ILC(003) will be interlocked.
a
MILH
0
MILC
0
A1
MILC
1
A2
This MILC(519) instruction is ignored.
When input condition "a" is OFF, program
sections A1 and A2 are both interlocked.
a
b
IL
ILC
A1
MILH
0
A2
When input condition "a" is OFF, program
sections A1 and A2 are both interlocked.
If the program section is not interlocked
by IL(002) and "b" is OFF, program
section A2 is interlocked.
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