Mitsubishi Electric MELSEC-Q Series User Manual page 88

(b) Before executing an interrupt program
Execute the EI instruction in a main routine program and enable an interrupt.
(Refer to the user's Manual (Function Explanation, Program Fundamentals) for
the CPU module used.)
Main routine
program
I/O interrupt
program
(c) When multiple interrupts simultaneously occur
The operation may delay.
(d) When the Simple Motion module is in offline mode
The Simple Motion module can send an interrupt request to the CPU module in
online mode (cannot send the request in offline mode).
(e) Starting an interrupt program by the rising/falling edge of the specified device
Do not start an interrupt program using instructions, such as PLS and PLF, that
depend on the rising/falling edge of the specified devices because changes in
devices might not be read.
(Example) Sending an interrupt request by turning on RX100 in a station in
network number 7
J7\
PLS X100
(f) An interrupt cannot be generated
Changes in the interrupt condition device cannot be detected if the change is
shorter than the transmission delay time.
(g) Using cyclic data in an interrupt program
When an interrupt program is executed, link refresh is not performed to CPU
module devices. Directly access the link devices of the Simple Motion module by
link direct access.
Enable interrupt
EI
FEND
I0
IRET
Interrupt pointer
Since change of RX100 may not be read,
this cannot be specified as interrupt condition.
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Chapter 7 PARAMETER SETTING