Omron SYSMAC CJ - REFERENCE MANUAL 08-2008

217
Sequence Control Instructions Section 3-5
•Example 2
Interlocking the entire program with one condition and interlocking two
overlapping parts of the program with other conditions (2 nesting levels)
• A1, A2, and A3 are interlocked when the Emergency Stop Button is
ON.
• A2 and A3 are interlocked when Conveyor RUN is OFF.
• A3 is interlocked when Arm RUN is OFF.
MILH
0
MILC
1
MILC
0
MILH
1
Global interlock
(Emergency stop)
Partial interlock
(Conveyor RUN)
A1 (Peripheral processing)
A2 (Conveyor operation)
When the Emergency Stop is ON (input
condition OFF), both A1 and A2 are
interlocked.
When the Emergency Stop is OFF (input
condition ON), A1 is executed normally
and A2 is controlled by the Conveyor
RUN switch as described below.
When the Conveyor RUN switch is OFF
(input condition OFF), A2 is interlocked.
When the Conveyor RUN switch is ON
(input condition ON), A2 is executed
normally.
Global interlock
(Emergency stop)
A1 (Peripheral processing)
Partial interlock
(Conveyor RUN)
A2 (Conveyor operation)
Partial interlock
(Arm RUN)
A3 (Arm operation)