Setting Description
PCM600. The
Cyclical period
setting defines the periodical
reporting time of these cyclical data objects.
Command delay Defines the maximum delta time (internal delay) allowed for
client control commands with time stamps.
3.8.4 Update rate of analog and indication protocol data
Update rate of protocol data depends on multiple factors that need to be
considered when communication engineering is done. This chapter describes
the mechanism how process data change is updated to IEC 60870-5-103, IEC
60870-5-104, Modbus and DNP3 communication protocols to process it further.
Figure 3: Data flow from process data change to communication protocol
Dataset and Report Control in IEC 61850
Data update rate is dependent of data set and report control engineering in
IEC 61850 tool. In most cases default values are suitable, as typically essential
measurement and indication data is by default mapped to IEC 61850 dataset and
report control block. However, it may be necessary to understand all dependencies,
if some customization or modification to update rates is needed:
• Data set content
• Trigger options for report control
2NGA001859 A
Vendor-specific implementation
REX615
IEC 60870-5-104 Communication Protocol Manual
31
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