Single Cpu System; Multiple Cpu System - Mitsubishi Electric MELSEC iQ-R Series User Manual

14.1

Single CPU System

The time of a programmable controller system will be equal to the time of this product (Windows).
Time information of this product is added to target data as a time stamp.
Data to which a time stamp is added
System
Programmable controller system
Windows
• The time synchronization setting will be ignored even if "Synchronize" is selected for "Time Synchronization
Setting."
• Windows time can be set in 'Date and Time' on Windows.
14.2

Multiple CPU System

The time of a programmable controller system to be synchronized varies depending on the CPU number of this product.
The overview of operation according to the combination of the time synchronization setting and the 'Date and Time' settings
on Windows is as shown below:
Time Windows setting
synchronization
Set the time
setting with
automatically
multiple CPU
(PLC No.1)
Synchronize ON
(Default)
OFF
Do not Synchronize ON
(Default) (Default)
OFF
When this product is set as CPU No.2 or later, time will automatically be synchronized with CPU No.1. Therefore, unified time
information can be handled in a system by setting the time of CPU No.1 only. However, note that the time information between
this product and CPU No.1 will be different if "Do not Synchronize" is set for "Time Synchronization Setting."
Data to which a time stamp is added
• Event history
• Error history
Event log
Set time zone
automatically
Not required
Not required
Added time stamp
Windows time
CPU No. of this product
CPU No.1
• The time is set automatically by
Windows.
• The Windows time zone setting is
applied without change.
• The time set by a user is set.
• The Windows time zone setting is
applied without change.
• The time is set automatically by Windows.
• The Windows time zone setting is applied without change.
• The time set by a user is set.
• The Windows time zone setting is applied without change.
14 TIME SYNCHRONIZATION FUNCTION
CPU No.2 or later
When this product is mounted on
CPU No.2 or later, do not set the time
synchronization setting.
When using this product as CPU
No.2 or later, set the Windows setting
to OFF. (Page 146 Windows
setting)
This product synchronizes with CPU
No.1.
145
14.1 Single CPU System
14