I/O Refresh (I/O Module Refresh Processing); Automatic Refresh Of The Intelligent Function Module - Mitsubishi Q00JCPU User Manual

3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS

3.4.2 I/O refresh (I/O module refresh processing)

In the I/O refresh, ON/OFF data are input from the input module or intelligent function
module to the CPU module, and are output from the CPU module to the output module or
intelligent function module.
(1) I/O refresh timing

3.4.3 Automatic refresh of the intelligent function module

When the automatic refresh setting of the intelligent function module has been made,
access is made to the set data of the intelligent function module.
Refer to the manual of the intelligent function modules, for details on the automatic refresh
setting of intelligent function modules.
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- 64 3.4 Operation Processing
3.4.2 I/O refresh (I/O module refresh processing)
POINT
1. The STOP, RUN and RESET switches of the CPU module are provided
differently depending on the CPU module.
• Switch of Basic model QCPU and Universal model QCPU
RUN/STOP/RESET switch
RESET
• Switches of High Performance model QCPU, Process CPU and
Redundant CPU
2. When a parameter or program has been changed in the STOP status, reset
the CPU with the RESET/L.CLR switch (RUN/STOP/RESET switch in the
case of the Basic model QCPU and Universal model QCPU ).
The I/O refresh is executed before the sequence program operation starts.
When the constant scan is set, the I/O refresh is performed after the constant scan
waiting time has elapsed.
(The I/O refresh is executed at each constant scan cycle.)
RUN
STOP
Basic model QCPU
RUN/STOP switch
STOP RUN
RESET/LCLR switch
RESET L.CLR
RUN/STOP/RESET switch
RESET RUN
STOP
Universal model QCPU