Parameters - Siemens SENTRON 3WA System Manual

Modbus TCP
5.10 System time with SNTP
5.10.4

Parameters

SNTP mode
• SNTP mode Off
– The COM190 system time is not synchronized with an NTP time server.
• SNTP mode Active:
– The SNTP client sends SNTP requests once an hour to synchronize the COM190 system
– If the NTP server address is zero, no synchronization requests are output and the
– On system start, the SNTP client immediately sends an SNTP query.
– If the SNTP client configuration is changed to active mode, the client immediately
– If the IP address of the NTP time server is changed while the SNTP client is in active
• SNTP mode Passive:
– The SNTP client accepts NTP broadcasts from NTP servers and synchronizes the
– If the NTP server address is zero, NTP broadcasts from any source are accepted.
– If the NTP server address is not zero, only NTP broadcasts from the configured address
NTP server address
The input format of the NTP server address is hexadecimal.
Example
IP v4 address as hexadecimal address:
192
CO
SNTP port
The SNTP service uses the default SNTP port 123 (UDP) and this cannot be changed.
46
time.
If an SNTP query is not answered, the SNTP client queries after 1 minute, after 5
minutes, and then every 15 minutes repeatedly, until the NTP server responds.
COM190 system time is not synchronized.
sends an SNTP query.
mode, the client immediately sends an SNTP query.
COM190 system time.
are accepted.
108
A8
IP v4 address:
192.108.219.111
219
DB
IP v4 address as hexadecimal address:
COA8DB6F
111
6F
3WA Air Circuit Breaker Communication
System Manual, 11/2021, 92310000004-02