Mitsubishi QCPU (Q Mode), Руководство пользователя

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MELSEC-Q
4 SEQUENCE PROGRAM CONFIGURATION AND EXECUTION
CONDITIONS
4.3 Operation Processing
4.3.1 Initial processing
This is a preprocessing for sequence operation execution, and is performed only once
as shown in the table below.
When the initial processing is completed, the High Performance model QCPU goes in
the RUN/STOP switch setting status. (See Section 4.4.)
High Performance model QCPU status
Initial processing item When the power
is turned on.
When reset is
executed.
When STOP
to RUN
1
The I/O module initialization
Boot from the standard ROM/memory card
Multiple PLC system parameter value equality
check
Device initialization of the range not latched
(bit device: OFF, word device: 0)
Execution of self-diagnosis in the QCPU
Automatic allocation of the I/O number of
installed modules
Start of the MELSECNET/H network information
setting and network communication
Switch setting of intelligent function module
CC-Link data setting
Ethernet data setting
Setting of device initialization values
: executed, : not executed
REMARK
1: When parameters or programs are changed in the STOP status, reset by the
RESET/L.CLR switch.
When the RUN/STOP switch is turned from STOP to RUN without the reset,
RUN LED flickes.
When the RUN/STOP switch is turned from RUN to STOP to RUN again, the
High Performance model QCPU goes in the RUN status, and the "When STOP
to RUN" status becomes effective.
4.3.2 I/O refresh (I/O module refresh processing)
In I/O refresh, an input (X) is received from the input module/intelligent function
module, and output (Y) of the High Performance model QCPU is sent to the output
module/intelligent function module.
The I/O refresh is executed before the sequence program operation starts.
During constant scan execution, the I/O refresh is executed after the constant scan
delay time has elapsed.
(The I/O refresh is executed at each constant scan cycle.)