Mitsubishi 00JCPU, Руководство пользователя

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CHAPTER3 CPU MODULE OPERATION
3
3.1 Initial Pr
oce
ssing
CHAPTER3 CPU MODULE OPERATION
This chapter describes operation of the CPU module.
3.1 Initial Processing
The CPU module performs preprocessing required for sequence program operations.
The preprocessing is executed only once when any of the operations described in Table3.1 is performed to the CPU
module.
When initial processing is completed, the CPU module will be placed in the operation status set by the RUN/STOP
switch (RUN/STOP/RESET switch for the Basic model QCPU). ( Section 3.5)
:Performed, :Not performed
*1: The operation indicates that the status is changed back to RUN without resetting the module after any parameter or program was
changed in the STOP status.
The RUN/STOP switch (the RUN/STOP/RESET switch for the Basic model QCPU) is set from STOP to RUN (the RUN LED will flash),
then back to STOP and to RUN again.
Note that the PLS, P instruction (instruction for pulse conversion) may not be executed properly with the above operation. This is
because the previous information may not be inherited depending on the program changes.
*2: If the start mode is set to the hot-start mode in the Redundant CPU, devices outside the latch range are not initialized.
(Except some devices, such as the step relay and the index register.)
Table3.1 Initial processing list
Initial processing item
CPU module status
Powered-on Reset
Changed from STOP to
RUN
*1
The I/O module initialization
Boot from a memory card
PLC parameter check
Multiple CPU system parameter consistency check
Initialization of devices outside the latch range
*2
(bit device: off, word device: 0)
Automatic I/O number assignment of mounted modules
CC-Link IE Controller Network and MELSECNET/H
information setting
Intelligent function module switch setting
CC-Link information setting
Ethernet information setting
Initial device value setting
Serial communication function setting