GE L30 Instruction Manual page 178

5.2 PRODUCT SETUP
5
The L30 supports the Distributed Network Protocol (DNP) version 3.0. DNP is enabled when the

SETUP COMMUNICATIONS
nected to multiple DNP masters (usually an RTU or a SCADA master station). Since the L30 maintains two sets of DNP
data change buffers and connection information, two DNP masters can actively communicate with the L30 at one time.
The DNP Channels sub-menu is shown below.

PATH: SETTINGS PRODUCT SETUP
 DNP CHANNELS

The
DNP CHANNEL 1 PORT
for each channel. Once DNP is assigned to a serial port, DNP is the only protocol running on that port; Modbus or IEC
60870-5-103 are disabled. If DNP is assigned to RS485, the protocol must be set to DNP on the serial port configuration as
well, for the change to take effect. When the
DNP protocol can be used over TCP/IP on the Ethernet ports. When the
UDP," the channel 1 DNP protocol can be used over UDP/IP on the Ethernet ports. See the DNP appendix for information
on the DNP protocol.
Changes to these settings take effect when 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
NOTE
those protocols.
The setting is the DNP slave address. This number identifies the L30 on a DNP communications link. Each
DNP ADDRESS
DNP slave should be assigned a unique address.
5-38
DNP MESSAGE FRAGMENT
MESSAGE
SIZE: 240
DNP OBJECT 1
MESSAGE
DEFAULT VARIATION: 2
DNP OBJECT 2
MESSAGE
DEFAULT VARIATION: 2
DNP OBJECT 20
MESSAGE
DEFAULT VARIATION: 1
DNP OBJECT 21
MESSAGE
DEFAULT VARIATION: 1
DNP OBJECT 22
MESSAGE
DEFAULT VARIATION: 1
DNP OBJECT 23
MESSAGE
DEFAULT VARIATION: 2
DNP OBJECT 30
MESSAGE
DEFAULT VARIATION: 1
DNP OBJECT 32
MESSAGE
DEFAULT VARIATION: 1
DNP NUMBER OF PAIRED
MESSAGE
CONTROL POINTS: 0
DNP TCP CONNECTION
MESSAGE
TIMEOUT: 120 s
setting is set to DNP 3.0. The L30 can be used as a DNP slave device con-

PROTOCOL

COMMUNICATIONS
DNP CHANNEL 1 PORT:
NETWORK
DNP CHANNEL 2 PORT:
MESSAGE
COM2 - RS485
and
DNP CHANNEL 2 PORT
DNP CHANNEL 1(2) PORT
L30 Line Current Differential System
Range: 30 to 2048 in steps of 1
Range: 1, 2
Range: 1, 2, 3
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 7200 s in steps of 1
 
DNP PROTOCOL DNP CHANNELS
Range: NONE, COM2 - RS485,
FRONT PANEL - RS232, NETWORK - TCP,
NETWORK - UDP
Range: NONE, COM2 - RS485,
FRONT PANEL - RS232, NETWORK - TCP
settings select the communications port assigned to the DNP protocol
setting is set to "Network - TCP," the channel 1(2)
DNP CHANNEL 1 PORT
5 SETTINGS

SETTINGS PRODUCT
setting is set to "Network -
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