GE Multilin C30 Controller System 5-33
5 SETTINGS 5.2 PRODUCT SETUP
5
The C30 supports the Distributed Network Protocol (DNP) version 3.0. The C30 can be used as a DNP slave device con-
nected to 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.
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 is not operational. When this setting is changed it does not become
active until power to the relay has been cycled (off-to-on).
The DNP Channels sub-menu is shown below.
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.
MESSAGE
DNP OTHER DEFAULT
DEADBAND: 30000
Range: 0 to 100000000 in steps of 1
MESSAGE
DNP TIME SYNC IIN
PERIOD: 1440 min
Range: 1 to 10080 min. in steps of 1
MESSAGE
DNP MESSAGE FRAGMENT
SIZE: 240
Range: 30 to 2048 in steps of 1
MESSAGE
DNP OBJECT 1
DEFAULT VARIATION: 2
Range: 1, 2
MESSAGE
DNP OBJECT 2
DEFAULT VARIATION: 2
Range: 1, 2, 3
MESSAGE
DNP OBJECT 20
DEFAULT VARIATION: 1
Range: 1, 2, 5, 6
MESSAGE
DNP OBJECT 21
DEFAULT VARIATION: 1
Range: 1, 2, 9, 10
MESSAGE
DNP OBJECT 22
DEFAULT VARIATION: 1
Range: 1, 2, 5, 6
MESSAGE
DNP OBJECT 23
DEFAULT VARIATION: 2
Range: 1, 2, 5, 6
MESSAGE
DNP OBJECT 30
DEFAULT VARIATION: 1
Range: 1, 2, 3, 4, 5
MESSAGE
DNP OBJECT 32
DEFAULT VARIATION: 1
Range: 1, 2, 3, 4, 5, 7
MESSAGE
DNP NUMBER OF PAIRED
CONTROL POINTS: 0
Range: 0 to 32 in steps of 1
MESSAGE
DNP TCP CONNECTION
TIMEOUT: 120 s
Range: 10 to 7200 s in steps of 1
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