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Configuration
3.13 Time-of-day synchronization
Configuration - DNP3
70
Configuration Manual, 11/2018, C79000-G8976-C508-01
Forwarding time of day by the TIM
The TIM can forward its time of day as follows:
●
To connected networks
Configuration with "Time of day synchronization" > "Send time" or "Receive time"
The procedure for configuration differs in Ethernet and classic WAN networks, see below.
●
On the assigned CPU
–
Configuration with "Time of day synchronization" > "Send time"
–
Configuration with "Communication with the CPU" > "Time to CPU"
With this method the time-of-day is made available to the CPU via a PLC tag.
Decide on one of the two methods for forwarding to the CPU and disable the other.
Time of day forwarding by a CP 1200
●
Forwarding the time to the CPU (CP 1243-1 / CP 1243-8 IRC)
Requirement: CP firmware
≥
V3.0 and CPU firmware ≥
V4.2
If both modules in the station have the specified firmware versions, the time of day of the
CP is automatically forwarded to the CPU. Since the CPU automatically adopts the CP
time, you no longer require the forwarding option using the PLC tag, like with CP firmware
< V3.
If the option "CPU synchronizes the modules of the device" is enabled for the CPU in
"PROFINET interface > Time synchronization", all smart modules of the station are
synchronized with the CPU time.
Configuration with the TIM and with WAN networks
Parameter groups for time-of-day synchronization
For configuring the time-of-day synchronization the following parameter groups are available:
●
TIM
–
Receive time
Here you specify via which of the connected networks the TIM will receive the time of
day. You configure this parameter group for the TIM modules with the network type
"Node station" and "Station".
Here is where you also configure the NTP servers if the TIM is to be synchronized
directly via NTP. This is usually only one TIM that functions as time master in the
network.
–
Send time
Here you specify the networks on which the TIM will forward the time of day.
You configure this parameter group for TIM modules with the network type "Master
station" in other word on the TIM that functions as time master in the network.