GE N60 Instruction Manual page 157

5 SETTINGS
The N60 can specify a maximum of five clients for its DNP connections. These are IP addresses for the controllers to which
the N60 can connect. The settings in this sub-menu are shown below.

PATH: SETTINGS PRODUCT SETUP
 DNP NETWORK
 CLIENT ADDRESSES
MESSAGE
MESSAGE
MESSAGE
MESSAGE
The
DNP TCP/UDP PORT NUMBER
effect when the N60 is restarted.
The
DNP UNSOL RESPONSE FUNCTION
mechanism. The
DNP UNSOL RESPONSE TIMEOUT
response. The
DNP UNSOL RESPONSE MAX RETRIES
ited response without receiving confirmation from the master; a value of "255" allows infinite re-tries. The
is the DNP address to which all unsolicited responses are sent. The IP address to which solicited
RESPONSE DEST ADDRESS
responses are sent is determined by the N60 from the current TCP connection or the most recent UDP message.
The DNP scale factor settings are numbers used to scale analog input point values. These settings group the N60 analog
input data into the following types: current, voltage, power, energy, power factor, and other. Each setting represents the
scale factor for all analog input points of that type. For example, if the
all DNP analog input points that are voltages will be returned with values 1000 times smaller (for example, a value of 72000
V on the N60 will be returned as 72). These settings are useful when analog input values must be adjusted to fit within cer-
tain ranges in DNP masters. Note that a scale factor of 0.1 is equivalent to a multiplier of 10 (that is, the value will be 10
times larger).
The
DNP DEFAULT DEADBAND
settings group the N60 analog input data into the following types: current, voltage, power, energy, power factor, and other.
Each setting represents the default deadband value for all analog input points of that type. For example, to trigger unsolic-
ited responses from the N60 when any current values change by 15 A, the
should be set to "15". Note that these settings are the deadband default values. DNP object 34 points can be used to
change deadband values, from the default, for each individual DNP analog input point. Whenever power is removed and
re-applied to the N60, the default deadbands will be in effect.
The
DNP TIME SYNC IIN PERIOD
Changing this time allows the DNP master to send time synchronization commands more or less often, as required.
The
DNP MESSAGE FRAGMENT SIZE
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.
Check the "DNP Points Lists" N60 web page to view the analog inputs and/or binary inputs points lists. This page
can be viewed with a web browser by entering the IP address of the UR Ethernet port employed to access the N60
"Main Menu", then by selecting the "Device Information Menu" > "DNP Points Lists" menu item.
NOTE
The
DNP OBJECT 1 DEFAULT VARIATION
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. See the DNP Implementation section in the DNP
appendix.
GE Multilin N60 Network Stability and Synchrophasor Measurement System
 
COMMUNICATIONS
CLIENT ADDRESS 1:
0.0.0.0
CLIENT ADDRESS 2:
0.0.0.0
CLIENT ADDRESS 3:
0.0.0.0
CLIENT ADDRESS 4:
0.0.0.0
CLIENT ADDRESS 5:
0.0.0.0
is for normal DNP operation. To close the port, set the port number to 0. The change takes
should be "Disabled" for RS485 applications since there is no collision avoidance
sets the time the N60 waits for a DNP master to confirm an unsolicited
setting determines the number of times the N60 retransmits an unsolic-
settings determine when to trigger unsolicited responses containing analog input data. These
setting determines how often the Need Time Internal Indication (IIN) bit is set by the N60.
setting determines the size, in bytes, at which message fragmentation occurs. Large
to
DNP OBJECT 32 DEFAULT VARIATION

DNP PROTOCOL DNP NETWORK CLIENT ADDRESSES
Range: standard IP address
Range: standard IP address
Range: standard IP address
Range: standard IP address
Range: standard IP address
DNP VOLTAGE SCALE FACTOR
DNP CURRENT DEFAULT DEADBAND
settings allow the user to select the DNP
5.2 PRODUCT SETUP
5
DNP UNSOL
setting is set to "1000",
setting
5-39