Iec 60870-5-103 Time Synchronization - ABB IEC 60870-5-103 Communication Protocol Manual

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3.2.1
670 series 2.2 IEC
Communication protocol manual
IEC 60870-5-103 communication engineering
If EventRepMode = HiPriSpont, spontaneous events will be delivered prior to GI
event. To prevent old GI data from being delivered after a new spontaneous event,
the pending GI event is modified to contain the same value as the spontaneous
event. As a result, the GI dataset is not time-correlated.

IEC 60870-5-103 time synchronization

An IED with IEC 60870-5-103 protocol can be used for time synchronization, but
for accuracy reasons, it is not recommended. In some cases, however, this kind of
synchronization is needed, for example, when no other synchronization is
available.
First, set the IED to be synchronized via IEC 60870-5-103 either from IED
Configuration/Time/Synchronization/TIMESYNCHGEN:1 in PST or from the
local HMI.
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Figure 4: Settings under TIMESYNCHGEN:1 in PST
Only CoarseSyncSrc can be set to 103, not FineSyncSource.
After setting up the time synchronization source, the user must check and modify
the IEC 60870-5-103 time synchronization specific settings, under Main menu/
Configuration/Communication/Station communication/IEC60870-5-103.
• MasterTimeDomain specifies the domain of time sync sent by the master. It
also defines the domain in which time stamps are delivered to the master.
(Format is CP56Time2a or CP32Time2a). Domain can be:
• Coordinated Universal Time (UTC)
• Local time set in the master (Local without DST)
• Local time set in the master adjusted according to daylight saving time
(Local with DST)
• TimeSyncMode specifies the time sent by the IED. The time synchronisation is
done using the following ways:
• IEDTime: The IED sends the messages with its own time.
• LinMastTime: The IED measures the offset between its own time and the
master time, and applies the same offset for the messages sent as in the
Section 3
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