GE L90 Instruction Manual page 105

5 SETTINGS
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
The L90 supports the Distributed Network Protocol (DNP) version 3.0. The L90 can be used as a DNP slave device con-
nected to a single DNP master (usually an RTU or a SCADA master station). Since the L90 maintains one set of DNP data
change buffers and connection information, only one DNP master should actively communicate with the L90 at one time.
The setting selects the communications port assigned to the DNP protocol; only a single port can be assigned.
DNP PORT
Once DNP is assigned to a serial port, the Modbus protocol is disabled on that port. Note that COM1 can be used only in
non-ethernet UR relays. When this setting is set to "Network", the DNP protocol can be used over either TCP/IP or UDP/IP.
Refer to Appendix E for more information on the DNP protocol. The
number identifies the L90 on a DNP communications link. Each DNP slave should be assigned a unique address. The
setting can force the L90 to respond to a maximum of five specific DNP masters.
NETWORK CLIENT ADDRESS
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 unsolic-
RESPONSE DEST ADDRESS
ited responses are sent is determined by the L90 from the current TCP connection or the most recent UDP message.
The
USER MAP FOR DNP ANALOGS
smaller Modbus User Map. This can be useful for users wishing to read only selected Analog Input points from the L90.
See Appendix E for more information.
The
NUMBER OF SOURCES IN ANALOG LIST
are included in the Analog Inputs points list. This allows the list to be customized to contain data for only the sources that
are configured. This setting is relevant only when the User Map is not used.
The settings are numbers used to scale Analog Input point values. These settings group the L90 Ana-
DNP SCALE FACTOR
log Input data into types: current, voltage, power, energy, and other. Each setting represents the scale factor for all Analog
Input points of that type. For example, if the
Input points that are voltages will be returned with values 1000 times smaller (e.g. a value of 72000 V on the L90 will be
returned as 72). These settings are useful when analog input values must be adjusted to fit within certain ranges in DNP
masters. Note that a scale factor of 0.1 is equivalent to a multiplier of 10 (i.e. the value will be 10 times larger).
The
DNP DEFAULT DEADBAND
settings group the L90 Analog Input data into types: current, voltage, power, energy, and other. Each setting represents the
default deadband value for all Analog Input points of that type. For example, to trigger unsolicited responses from the L90
GE Multilin
DNP MESSAGE FRAGMENT
SIZE: 240
# DNP BINARY INPUTS
# USER MAP
DNP OBJECT 1
DEFAULT VARIATION: 2
DNP OBJECT 2
DEFAULT VARIATION: 2
DNP OBJECT 20
DEFAULT VARIATION: 1
DNP OBJECT 21
DEFAULT VARIATION: 1
DNP OBJECT 22
DEFAULT VARIATION: 1
DNP OBJECT 23
DEFAULT VARIATION: 2
DNP OBJECT 30
DEFAULT VARIATION: 1
DNP OBJECT 32
DEFAULT VARIATION: 1
should be "Disabled" for RS485 applications since there is no collision avoidance
sets the time the L90 waits for a DNP master to confirm an unsolicited
setting determines the number of times the L90 retransmits an unsolic-
setting allows the large pre-defined Analog Inputs points list to be replaced by the much
setting allows the selection of the number of current/voltage source values that
DNP VOLTAGE SCALE FACTOR
settings determine when to trigger unsolicited responses containing Analog Input data. These
L90 Line Differential Relay
5.2 PRODUCT SETUP
Range: 30 to 2048 in steps of 1
Range: 1, 2
Range: 1, 2
Range: 1, 2, 5, 6
Range: 1, 2, 9, 10
Range: 1, 2, 5, 6
Range: 1, 2, 5, 6
Range: 1, 2, 3, 4, 5
Range: 1, 2, 3, 4, 5, 7
setting is the DNP slave address. This
DNP ADDRESS
setting is set to a value of 1000, all DNP Analog
5
DNP
DNP UNSOL
5-15