Sequence Of Events Collection Parameter (Section D) - Emerson PACSystems RX3i User Manual

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GFK-2911E

Sequence of Events Collection Parameter (Section d)

Set the value for the Sequence of Events (SOE) collection parameter as required by the
application.
Table 19:
Parameter
mComreq_Setup[66]
SOE is a technique whereby the DNP3 module will store events even if a master is not
connected. SOE collection will continue until such time as either the maximum storage
space for SOE storage has been exhausted, or the master connects.
This is a flag that indicates to the module to do following two things:
• Store point data historically to the limits specified.
• Create a [TCP/IP port +1] from the port specified in [008] for a master to connect to and
get this information in addition to the connections with port specified in [008].
Note that this port [TCP/IP port +1] is in addition to the existing port as specified in [008]
and is used by EDS001 module to transfer the historical/buffered event data to the Master.
This connection with Master using the new port (TCP/IP Port +1) is treated as an additional
Master connection. Hence the user needs to explicitly set the number of Master connections
accordingly in [007], so that DNP3 Master can get the buffered event data on this additional
connection with [TCP/IP Port + 1].
For example, if the SOE is enabled [66] =1, and [008] =20000, then the number of Master
connections in parameter [007] should be set to 2. In this case the EDS001 will have two
connections to the Master:
with Port 20000: Master will receive current event data via this connection
with Port 20001: Master will receive historical or buffered event data via this connection.
Note:
SOE mode can store more than one event for a point, so a sequence of events history may
be stored in the module whenever this parameter has been enabled.
The number of data points for which events can be stored is 8000 AI and 8000 AO points,
and 2000 DI and 2000 DO Points. Events can either be instances of a single point change, or
multiple changes of the same point.
The length of the SOE storage buffer is fixed by default, and the stored contents are
historical. Once the buffer fills up, no more events data will be captured in the buffer. In
reporting out the buffer contents, the module transmits them in reverse chronological
order: the first-recorded event will be the last event transmitted.
Configuration of DNP3 outstation Parameters
Value
0 or 1
The SOE functionality for historical /buffered events will only be available for one Master for
a given EDS001 module. In case of multiple masters connecting to EDS001 module, the
EDS001 module will send the SOE data only to the first master connection on the port
[TCP/IP port +1].
Description
0 = Disable SOE Collection of DNP3 Data;
1 = Enable SOE Collection of DNP3 Data
Note: UTC time is used to time-stamp events during SOE
collection.
Chapter 6
Sep 2019
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