GE C30 Instruction Manual page 192

PRODUCT SETUP
The Distributed Network Protocol (DNP) allows for the optimization of control and data acquisition between the equipment
in the substation and the central control center. The protocol is scalable; that is, it is designed to be compatible with the
latest high speed LAN technology yet still be implemented over slower speed serial links.
The DNP improves upon many master-slave protocols by improving overall communication performance requirements
and provides time-stamping with millisecond accuracy.
The C30 supports the Distributed Network Protocol (DNP) version 3.0. DNP is enabled when the
 COMMUNICATIONS  PROTOCOL
multiple DNP masters (usually an RTU or a SCADA master station). Since the C30 maintains two sets of DNP data change
buffers and connection information, two DNP masters can actively communicate with the C30 at one time.
See the UR Family Communications Guide for more information on DNP.
5
The DNP Channels sub-menu is shown.
SETTINGS  PRODUCT SETUP  COMMUNICATIONS  DNP PROTOCOL  DNP CHANNELS
 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
protocol can be used over TCP/IP on the Ethernet ports. When this value is set to "Network - UDP," the DNP protocol can be
used over UDP/IP on channel 1 only.
Changes to these port 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
those protocols.
The setting is the DNP slave address. This number identifies the C30 on a DNP communications link. Assign a
DNP ADDRESS
unique address to each DNP slave.
The C30 can specify a maximum of five clients for its DNP connections. These are IP addresses for the controllers to which
the C30 can connect. The settings follow.
SETTINGS  PRODUCT SETUP  COMMUNICATIONS  DNP PROTOCOL  DNP NETWORK CLIENT ADDRESSES
 DNP NETWORK
 CLIENT ADDRESSES
5-36
DNP OBJECT 23

DEFAULT VARIATION: 1
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
DNP EVENT TIME BASE:

LOCAL
setting is set to DNP 3.0. The C30 can be used as a DNP slave device connected to
DNP CHANNEL 1 PORT:

NONE
DNP CHANNEL 2 PORT:

NONE
and settings select the communications port assigned to the DNP protocol
DNP CHANNEL 2 PORT
DNP CHANNEL 1(2) PORT
CLIENT ADDRESS 1:

0.0.0.0
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
Range: UTC, LOCAL
Range: NONE, COM1 - RS485, COM2 - RS485, FRONT
PANEL - RS232, NETWORK - TCP, NETWORK - UDP
Range: NONE, COM1 - RS485, COM2 - RS485, FRONT
PANEL - RS232, NETWORK - TCP
setting is set to "Network - TCP," the channel 1(2) DNP
Range: standard IP address

C30 CONTROLLER SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
SETTINGS  PRODUCT SETUP