SNTP ServerΒΆ

The AC500 can function as an SNTP Server to other clients (such as other AC500 PLCs).

For PLCs with multiple Interfaces, the server can be configured to run on either one or both interfaces (ETH1, ETH2).

The configuration of the SNTP protocol: SNTP Server Configuration

Example

  • Restrict access to the SNTP server to the subnet from 192.168.0.1 to 192.168.0.254 by CIDR notation 192.168.0.0/24.
  • Restrict access to the SNTP server to the subnet from 10.0.0.0 to 10.255.255.255 by notation 10.0.0.0/8

Note

The SNTP server will use the local clock to serve its time.

Sync the local clock to a more precise time source:

  • Being SNTP client and receiving the time from a more reliable NTP server.
  • By syncing the local clock to another time source like a GPS or DCF77 clock.