Dnp / Iec104 Point Lists - GE 889 Instruction Manual

CHAPTER 4: SETPOINTS
NOTE:
NOTE
DNP / IEC104 Point
Lists
889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
DNP Time Sync IIN Period
Range: 1 to 10080 min. in steps of 1
Default: 1440 min
This setting determines how often the Need Time Internal Indication (IIN) bit is set by the
889. Changing this time allows the DNP master to send time synchronization commands
more or less often, as required.
If the requirement for synchronization is more than a couple of seconds, the user is
advised to consider synchronization via other means such as IRIGB or 1588. Given network
asymmetry, the consistency of the network latency, clock drift, and additional delays due
to routers located between the client and the 889 all contribute error.
DNP Message Fragment Size
Range: 30 to 2048 in steps of 1
Default: 240
This setting determines the size, in bytes, at which message fragmentation occurs. Large
fragment sizes allow for more efficient throughput; smaller fragment sizes cause more
application layer confirmations to be necessary which can provide for more robust data
transfer over noisy communication channels.
DNP OBJECT 1 Default Variation to DNP Object 32 Default Variation
These settings allow the user to select the DNP default variation number for object types
1, 2, 20, 21, 22, 23, 30, and 32. The default variation refers to the variation response when
variation 0 is requested and/or in class 0, 1, 2, or 3 scans.
TCP Connection Timeout
Range: 10 to 300 s in steps of 1
Default: 120 s
This setting specifies a time delay for the detection of dead network TCP connections. If
there is no data traffic on a DNP TCP connection for greater than the time specified by
this setting, the connection will be aborted by the 889. This frees up the connection to be
re-used by a client.
The menu path for the DNP/IEC104 point lists is shown below.
Path:
Setpoints > Device > Communications > DNP/IEC104 Point Lists
Binary Input / MSP Points
Analog Input / MME Points
Binary Outp / CSC / CDC Pnts
The binary inputs points for the DNP protocol, or the MSP points for IEC 60870-5-104
protocol, can be configured to a maximum of 96 points. The data source for each point is
user-programmable and can be configured by assigning FlexLogic operands. For a
complete list, see Format Code FC142.
The menu path for the binary input points (DNP) or MSP points (IEC 60870-5-104) is shown
below.
Path:
Setpoints > Device > Communications > DNP/IEC104 Point Lists > Binary Input/MSP
Points
Point 0 Entry
...
Point 95 Entry
Up to 32 analog input points can be configured for the DNP or IEC 60870-5-104 protocols.
The menu path for the analog input point (DNP) or MME points (IEC 60870-5-104) is shown
below.
DEVICE
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