222
Sequence Control Instructions Section 3-5
Unlike the IL(002) interlocks, MILH(517) and MILR(518) interlocks can be
nested, so the operation of similar programs will be different if MILH(517) or
MILR(518) is used instead of ILC(002).
Program with MILH(517)/MILC(519) Interlocks
Execution
condition
Program section
a b A1 A2 A3
OFF ON Interlocked Interlocked Not interlocked
OFF
ON OFF Not interlocked Interlocked Not interlocked
ON ON Not interlocked Not interlocked Not interlocked
a
b
a
MILH
0
MILC
1
MILC
0
A1
A1
b
MILH
1
A2
A2
a
b
MILH
0
010000
MILC
1
MILC
0
A1
MILH
1
010001
A2
A3
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