Mitsubishi Electric MELSEC iQ-R Series User Manual page 146

Precautions
When setting "Do not Synchronize" for the time synchronization setting, Windows daylight saving time settings are enabled
for the time on the programmable controller system of this product. The following conditions must be satisfied to set the
Windows daylight saving time settings.
• An area where the time is adjusted for one hour for daylight savings
• An area where daylight saving time starts or ends at 00 minutes.
If the conditions are not satisfied, an error will occur.
When using this product in the area where the condition is not satisfied (the time is adjusted for more than one hour), turn
OFF "Set time zone automatically" in the 'Date and Time' of Windows to disable Windows daylight saving time settings.
The time data range of programmable controller system for this product is as shown below:
• 1980/1/1 0:00:00 to 2079/12/31 23:59:59
When the time data exceeds the upper range limit, it returns to 1980/1/1 0:00:00. Make sure to operate the system so that
Windows time information is within the range.
The time zone range of this product is as shown below:
• -12 hours to +13 hours
Operate the system so that the setting is within the range. Setting a time zone out of range causes an error.*1
*1 When performing the error clear function, the error will not be detected again. To detect the error, take the following measures:
 Restarting Windows
 Resetting the bus
 Turning the power of this product OFF  ON
 Resetting the hardware
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*1