Omron CP - PROGRAMMING MANUAL 05-2007 Programming Manual page 181

Sequence Control Instructions
148
Instead of switching processing with compound conditions, insert an
MILH(517) or MILR(518) instruction before each process and an MILC(519)
instruction after each process.
a
A1
b
A2
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
a
MILH
100.00
A1
b
MILH
100.01
A2
MILC
A3
MILC
Execution condition
a b
OFF ON Interlocked
OFF
ON OFF Not interlocked
ON ON Not interlocked
a
b
0
1
1
0
Program section
A1 A2
Interlocked
Interlocked
Not interlocked
Section 3-4
MILH
0
A1
MILH
1
A2
MILC
1
MILC
0
A3
Interlocked
Not interlocked
Not interlocked