Siemens Simatic RTU3030C, Руководство по эксплуатации

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Configuration (WBM)
4.10 System
RTU303xC
118
Operating Instructions, 06/2019, C79000-G8976-C382-06
NTP settings
● Interface
Select the interface via which the RTU will be synchronized.
● IP address or DNS name of the NTP server
Assign the address of the NTP server.
● Accept time of day from non-synchronized NTP servers
If the option is enabled, the RTU also accepts the time-of-day from non-synchronized
NTP servers with stratum ≥ 15.
If the option is disabled, the time of day of the RTU is not set by NTP servers with stratum
≥ 15. In this case the RTU uses the last accepted time of day.
Diagnostics messages
● Check time-of-day synchronization
If synchronization is via the mobile wireless network the option cannot be activated.
If this option is enabled, the RTU checks whether its time of day has been set according
to the settings made.
–
If the time of day was set, the RTU enters a diagnostics message of the class. "INFO"
in the diagnostics buffer.
– If the time of day could not be set, the RTU enters a diagnostics message of the class.
"ERROR" in the diagnostics buffer.
The diagnostics messages are entered incoming/outgoing; in other words, only the last
message is entered in the diagnostics buffer.
● Reduction factor for communication cycle
By selecting an entry from the drop-down list, you specify the reduction factor for the
cycle in which the RTU checks the time of day synchronization.
The basis for the checking cycle is the basic cycle of the communication mode that you
configure on the WBM page "Operating mode".
If you select a reduction factor of 1, the acceptance of the time of day is checked with
each change to the communication mode.
If you select a higher reduction factor, the cycle is increased according to the displayed
value.
Set system time manually
Select one of these options if you want or need to reduce communication via mobile
wireless.