Chapter 4. CPU module
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4.5 Functions
4.5.1 Restart mode
The restart mode defines how to initialize variables and the system and how to operate in the RUN mode
when the system starts its operation with the RUN mode by re-application of the power or mode change. Two
restart modes, cold and warm restart are available and the execution condition for each restart mode is given
below.
(For details, refer to the ‘4.5.1 Basic Parameters Edit’ of the GMWIN User’s Manual Section 4.5 Parameters
Edit.
1) Cold Restart
(1) It is executed when the restart mode parameter has been set to the cold restart mode.
(2) All data are cleared with ‘0’ and only the variables to which their initial value has been defined will be
set to their initial value.
(3) Though the parameter has been set to the warm restart mode, cold restart will be executed at the first
execution of a program after it has been changed.
(4) In case of selection ‘Reset’ command in the GMWIN, it restarts in accordance with setting in parameter
and in case of selection ‘Overall Reset’ command, it restarts as cold restart mode.
2) Warm Restart
(1) It is executed when the restart mode parameter has been set to the warm restart mode.
(2) A data which set as retain & initial wil l be retain and a data which set as initial value will be set with
default value during the warm restart. All other data will be cleared with ‘0’.
(3) Though the parameter has been set to the warm restart mode, cold restart will be executed at the first
execution of a program after it has been stopped due to its download or error.
(4) Though the parameter has been set to the warm restart mode, cold restart will be executed if data
contents are abnormal (i.e., the data does not remain at a power failure)