Time-Of-Day Synchronization Of The S7-300 Cpu - Siemens SIMATIC TIM 3V-IE DNP3 System Manual

The procedure that follows differs depending on the S7 device family (S7-300 / S7-400) and
on the network type.
Time-of-day synchronization via the TIM in an S7-300
You specify day direction of the time-of-day synchronization with the type of connected
interfaces of the TIM modules. The configuration is slightly different for the various network
types:
● Ethernet
The direction of time-of-day transfer is made here by setting the "connection mode" of the
TIM interfaces. Set the connection mode in the properties dialogs of the TIM in the
"Interfaces" tab; for the master station set "DNP3 master station" and for the other TIM
modules set "DNP3 station" or "DNP3 node station".
● Dedicated line / dial-up network
Here, the direction of the time of day transfer is decided by the setting of the "Network
node type" of the connected TIM modules (properties dialog of the TIM > "Interfaces" tab
> WAN interface X > Properties > Node type) The time of day is sent by the master
station to the connected station TIMs or node stations. For information on configuration,
refer to the properties dialog of the WAN network, section Configuring WAN network
nodes (Page 99)
You configure the time-of-day synchronization of the TIM modules in the properties dialog of
the TIM > "Time Service" tab (Page 117).
The station TIM makes the time of day available to the local CPU in its I/O addresses. This
makes the time of day available to the assigned S7 CPU. You will find details in the section
Time-of-day synchronization of the S7-300 CPU (Page 135).
Time-of-day synchronization via the TIM in an S7-400
You will find a description of the procedure for a TIM as CP of the S7-300 and for the S7-400
in the section Time-of-day synchronization of an S7-400 CPU (Page 137).
Time-of-day synchronization using the CPU
Apart from the time of day synchronization of the station using the TIM, you can also
synchronize the time of day of the TIM with that of the CPU.
You will find a description of the procedure for an S7-300 and an S7-400 in the section
Synchronization of the TIM time of day by the CPU (Page 138).
5.9.2

Time-of-day synchronization of the S7-300 CPU

Time information provided by the TIM
The time-of-day synchronization of the TIM is configured in STEP 7 in the properties dialog
of the TIM, refer to the section "Time Service" tab (Page 117).
The function described below applies only if the TIM is installed as a CP in the S7-300 rack.
It does not apply to a stand-alone TIM.
TIM DNP3
System Manual, 12/2015, C79000-G8976-C253-04
Configuration in STEP 7
5.9 Configuring time-of-day synchronization
135