Siemens SIMATIC TeleControl DNP3 Configuration Manual page 71

● Classic WAN network
For classic networks the "Time-of-day synchronization" is enabled in the parameter group
of the same name. You also specify the synchronization cycle.
The settings for synchronization are then adopted by all connected TIM modules.
The send direction of the time-of-day frames is derived automatically from the node type
of the connected interfaces:
Master station ⇒ Node station ⇒ Station
The settings for the network are not necessary with time-of-day synchronization via Ethernet.
Configuring the synchronization via Ethernet
Time master
1. In the parameter group "Receive time" of the TIM to be time master configure the time
source with one of the following options:
– From NTP server
– From local station
– Receive time from WAN
2. Configure the interface of the TIM via which time frames will be forwarded in the
parameter group "WAN settings" as network node type "Master station".
The function is supported for the Ethernet interface with the MSC protocol and for the
serial interface with the setting "network type" = "Neutral".
3. In the parameter group "Send time" for the interface from step 2 enable the option
"Forward time to WAN".
Via the connected network the time frames are forwarded in the network.
4. If necessary, enable the "To local station" option in the "Send time" parameter group if the
assigned CPU should also be synchronized.
Time slaves
1. Configure the interfaces of the other TIM modules that will be time slaves in the
parameter group "WAN settings" as network node type "Node station" or "Station".
The function is supported for the Ethernet interface with the MSC protocol and for the
serial interface with the setting "network type" = "Neutral".
2. Network the interfaces of the TIM modules involved with each other and with the interface
of the time master.
3. For the stations set the parameters of time-of-day synchronization in the parameter group
"Receive time".
4. If necessary, enable the "To local station" option in the "Send time" parameter group if the
assigned CPU should also be synchronized.
Configuration - DNP3
Configuration Manual, 11/2018, C79000-G8976-C508-01
(take the time from the assigned CPU)
(take the time from a network)
Configuration
3.13 Time-of-day synchronization
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