GE L90 Instruction Manual page 165

5 SETTINGS
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
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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 multiple DNP masters (usually an RTU or a SCADA master station). Since the L90 maintains two sets of DNP
data change buffers and connection information, two DNP masters can actively communicate with the L90 at one time.
The IEC 60870-5-104 and DNP protocols cannot be used simultaneously. When the IEC 60870-5-104 FUNCTION
setting is set to "Enabled", the DNP protocol will not be operational. When this setting is changed it will not become
active until power to the relay has been cycled (off-to-on).
NOTE
The DNP Channels sub-menu is shown below.
PATH: SETTINGS PRODUCT SETUP
DNP CHANNELS
MESSAGE
The and
DNP CHANNEL 1 PORT
for each channel. 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 - 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 chan-
nel 1 only. Refer to Appendix E for additional information on the DNP protocol.
Changes to the DNP CHANNEL 1 PORT and DNP CHANNEL 2 PORT settings will take effect only after power has
been cycled to the relay.
NOTE
The
DNP NETWORK CLIENT ADDRESS
settings in this sub-menu are shown below.
GE Multilin
DNP MESSAGE FRAGMENT
SIZE: 240
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
DNP NUMBER OF PAIRED
CONTROL POINTS: 0
DNP TCP CONNECTION
TIMEOUT: 120 s
COMMUNICATIONS
DNP CHANNEL 1 PORT:
NETWORK
DNP CHANNEL 2 PORT:
COM2 - RS485
settings select the communications port assigned to the DNP protocol
DNP CHANNEL 2 PORT
settings can force the L90 to respond to a maximum of five specific DNP masters. The
L90 Line Current Differential System
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
Range: 0 to 32 in steps of 1
Range: 10 to 300 s in steps of 1
DNP PROTOCOL DNP CHANNELS
Range: NONE, COM1 - RS485, COM2 - RS485,
FRONT PANEL - RS232, NETWORK - TCP,
NETWORK - UDP
Range: NONE, COM1 - RS485, COM2 - RS485,
FRONT PANEL - RS232, NETWORK - TCP,
NETWORK - UDP
5.2 PRODUCT SETUP
5
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