5-38 G60 Generator Protection System GE Multilin
5.2 PRODUCT SETUP 5 SETTINGS
5
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS DNP PROTOCOL DNP CHANNELS
The DNP CHANNEL 1 PORT and DNP CHANNEL 2 PORT settings select the communications port assigned to the DNP protocol
for each channel. Once DNP is assigned to a serial port, the Modbus protocol is disabled on that port. When this setting is
set to “Network - TCP”, the DNP protocol can be used over TCP/IP on channels 1 or 2. When this value is set to “Network -
UDP”, the DNP protocol can be used over UDP/IP on channel 1 only. Refer to Appendix E for additional information on the
DNP protocol.
Changes to these settings take effect only after power has been cycled to the relay.
Do not set more than one protocol to the same TCP/UDP port number, as this results in unreliable operation of
those protocols.
The
DNP ADDRESS setting is the DNP slave address. This number identifies the G60 on a DNP communications link. Each
DNP slave should be assigned a unique address.
The DNP NETWORK CLIENT ADDRESS settings can force the G60 to respond to a maximum of five specific DNP masters. The
settings in this sub-menu are shown below.
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS DNP PROTOCOL DNP NETWORK CLIENT ADDRESSES
The DNP TCP/UDP PORT NUMBER is for normal DNP operation. To close the port, set the port number to 0. The change takes
effect when the G60 is restarted.
The DNP UNSOL RESPONSE FUNCTION should be “Disabled” for RS485 applications since there is no collision avoidance
mechanism. The
DNP UNSOL RESPONSE TIMEOUT sets the time the G60 waits for a DNP master to confirm an unsolicited
response. The
DNP UNSOL RESPONSE MAX RETRIES setting determines the number of times the G60 retransmits an unsolic-
ited response without receiving confirmation from the master; a value of “255” allows infinite re-tries. The
DNP UNSOL
RESPONSE DEST ADDRESS is the DNP address to which all unsolicited responses are sent. The IP address to which unsolic-
ited responses are sent is determined by the G60 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 G60 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 DNP VOLTAGE SCALE FACTOR setting is set to “1000”,
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 G60 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 determine when to trigger unsolicited responses containing analog input data. These
settings group the G60 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 G60 when any current values change by 15 A, the
DNP CURRENT DEFAULT DEADBAND setting
DNP CHANNELS
DNP CHANNEL 1 PORT:
NETWORK
Range: NONE, COM2 - RS485,
FRONT PANEL - RS232, NETWORK - TCP,
NETWORK - UDP
MESSAGE
DNP CHANNEL 2 PORT:
COM2 - RS485
Range: NONE, COM2 - RS485,
FRONT PANEL - RS232, NETWORK - TCP,
NETWORK - UDP
DNP NETWORK
CLIENT ADDRESSES
CLIENT ADDRESS 1:
0.0.0.0
Range: standard IP address
MESSAGE
CLIENT ADDRESS 2:
0.0.0.0
Range: standard IP address
MESSAGE
CLIENT ADDRESS 3:
0.0.0.0
Range: standard IP address
MESSAGE
CLIENT ADDRESS 4:
0.0.0.0
Range: standard IP address
MESSAGE
CLIENT ADDRESS 5:
0.0.0.0
Range: standard IP address
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