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controller, the system recognizes the differences between the
"old" and the modified project version.
l If there is a lot of differences, a warning message appears
indicating that the program execution will be stopped if you
continue the download. Click Yes to continue the download.
Click No to cancel the download.
l If there is a few of differences, the modified project is
downloading without stopping program execution.
4. Click OK after the project is downloaded to the controller
successfully.
Configuring date/time
Setting time source
The section introduces how to synchronize the controller time to the
SNTP server.
For ControlEdge 900 controller, the synchronization is required in
order to ensure robust operation of the embedded OPC UA server.
1. From the Home Page, under Miscellaneous, click Configure
Date/Time Options.
2. Select Enable and enter the IP addresses of SNTP servers in the
Primary Server and Secondary Server fields.
If you select Enable here, under Configure ProtocolsDNP3 Slave, you
should not select Enable DNP3 Time Synchronization in Application
Layer tab at the same time.
3. Adjust the Poll Interval to synchronize current controller time to
the SNTP server.
The SNTP message poll interval is Poll Interval power of 2 (2
(Poll
Interval)
) in unit of second.
The maximum poll interval is 17 (approx. 36 hours) and the
minimum is 6 (64 seconds).
It is recommended to set Poll Interval as 16 (approx. 18 hours). To
avoid the communication storm, the controller will pick a random
poll interval time in the range [2(Poll Interval), 2(Poll Interval+1)],
not exactly what is configured.
If the NTP server is not available, you can use the function block
(Set_RTC) to configure the controller time. For more information,
Chapter 5 - Operating
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