Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual page 265

Sequence Control Instructions
Other instructions can be input between the MILC(519) instructions, as shown
in the following diagram.
a
A1
b
A2
A3
If there is an ILC(003) instruction between an MILH(517) and MILC(519) pair,
the program section between MILH(517) and ILC(003) will be interlocked.
a
A1
A2
MILH
0
010000
MILH
1
010001
MILC
1
Other instructions can be inserted between
two MILC(519) instructions. In this case,
sections A1 and A3 operate together. (They
are interlocked when "a" is OFF, regardless
of the ON/OFF status of "b".)
MILC
0
MILH When input condition "a" is OFF, only
program section A1 is interlocked.
0
If there is an ILC(003) instruction,
ILC
the interlock is cleared at that point.
The MILC(519) instruction is ignored.
MILC
0
Section 3-5
225