Dnp3 Parameters; Parameter Descriptions - Hitachi Relion 670 Series Communication Protocol Manual

1MRK511391-UUS Rev. L
Section 4
4.1

Parameter descriptions

The DNP3 parameters for a specific IED can be accessed with PCM600 via Configuration /
Communication /Station Communication /DNP3.0 . There is one general setting for DNP3 (Disabled/
Enabled), available in function DNPGEN:1. This parameter must be Enabled for the other parameters to
have effect. Each communication channel has specific settings.
Function OPTICALPROT:1 is used to arbitrate between communication protocols such as DNP3 or IEC
60870-5-103 on the optical port. Function RS485PROT:1 is used to select if DNP3 or IEC 60870-5-103
communication protocol shall be used for the RS485 serial port. When RS485 serial port is selected, also
settings in function RS485GEN:1 must be considered.
There are specific settings for the serial channel depending on if the serial optical or RS485 interface is
used. Communication specific settings for the serial optical interface are available in function
OPTICALDNP:1 and communication specific settings for the RS485 interface are available in function
RS485DNP:1. There are specific settings for the master sessions, available in function MSTSERIAL:1,
when a master session occurs on the serial channel.
In function DNPGENTCP:1 the selection of physical ports for the protocol is configured. There are
specific settings for the TCP/IP channel, available in functions CH1TCP to CH4TCP and MST1TCP to
MS4TCP.
The channel blocks and the master blocks are separate but should be treated as pairs grouped together
with a number. For example, CH1TCP and MST1TCP should be treated as an entity during engineering.
The reason for this division is that it is conceptually possible to have multiple masters talking on the same
channel, for example, a serial link, and it is also possible to imagine a single master switching between
different channels, for example, different serial links.
TCP/IP communication, CH1TCP - CH4TCP channels settings
TCPIPLisPort defines the listen port if the channel is configured for TCP/IP. Default is 20000.
UDPPortAccData defines the port on which the UDP datagrams should be accepted if the channel is
configured for networking. Default is 20000.
UDPPortInitNUL defines the master's destination port to which the initial NULL response should be sent
if the channel is configured for networking. Default is 20000.
UDPPortCliMast defines the master's destination port to which responses should be sent if the channel is
configured for networking. If the parameter is set to 0, the port number and master IP address is taken
from the previous request. Default is 0. There are specific settings for the master sessions if the master
session occurs on the serial channel or on the TCP/IP channels.
ApLayMaxRxSize specifies the maximum application fragment size received in octets.
ApLayMaxTxSize specifies the maximum application fragment size transmitted in octets.
Master session settings for a specific communication channel ,MST1TCP -
MST4TCP
Operation determines the operation of the master session. 0 = Disabled . 1 = Enabled .
SlaveAddress defines the DNP3 address of this master session.
DNP, 670 series
Communication protocol manual

DNP3 parameters

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Section 4
DNP3 parameters
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