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Modbus TCP Remote I/O Communication Module RTU-EN01
DVP-PLC Operation Manual
23
1. Enable time server:
RTU-EN01 execute automatic time correction from the NTP server on the network every 6 hours to
ensure the time is correct in the RTC. To enable this function, you have to set up first the IP
address of the NTP server and the time zone and daylight saving time which your RTU-EN01 is in.
2. Start daylight saving time
Daylight Saving Time; also known as summer time, is a conventional local time adopted by many
countries in the world on a seasonal basis. Most commonly DST is obtained by adjusting the
official local time forward, by one hour, for the spring, summer, and early autumn periods.
3. Time server:
IP address of the time server. You can acquire correct time from the time server to correct the time
in the MPU.
4. Time zone:
There are 24 time zones on earth and follow Greenwich Mean Time (GMT) as the standard time.
Select the time zone you are in and adjust the offset between the time of your city and Coordinated
Universal Time (UTC).
5. Clock setup:
Set up the time in RTU-EN01. You can set the time to the same as the PC in operation, or you may
as well set up the time manually.
6.6 IP Filter
The IP filter is used for restricting the connection of the network in case some uncertain UP will cause errors. Only
the IP set within a certain range can establish a connection. Other IPs will be rejected.
Setting up IP filter
1. Enable IP filter: