Protocol Data Mapping To Server Instances; Link Modes; Serial Link Mode - ABB RELION Series Communication Protocol Manual

1MRS758757 A
3.1.4
3.2
3.2.1
REC615 and RER615
Communication Protocol Manual

Protocol data mapping to server instances

There are two different type of data mappings for the protocol. The mappings are
identified and numbered, starting from one. This number is not related to the protocol
instance number.
In PCM600, it is necessary to always define the mappings to be edited or viewed.
Each protocol instance has the setting parameter Mapping select, which defines the
protocol mappings to be used by this instance. Several protocol instances can use the
same mapping. By default, the Mapping select parameter for all the instances is set to
use the mapping number one.
Reboot the protection relay after changing the mapping number.

Link modes

DNP3 can be configured to operate in serial or Ethernet mode. The operation mode is
configured with the Port parameter.

Serial link mode

DNP3 serial can be assigned to a serial communication port in the protection relay.
Serial communication ports are named COM1...COMn, depending on how many
serial ports the protection relay hosts.
DNP3 protocol ignores any parity setting in the COM settings group. DNP3 is defined
as an 8 bit/no parity protocol with a 16-bit CRC every 16 bytes. These characteristics
are automatically configured by the protection relay's software when a serial port is
taken into use by DNP3. However, some characteristics of the serial port must be set:
baud rate, serial mode (RS-232, RS-485 2/4-wire) and fiber mode. They are located in
the serial port settings.
• Configuration/Communication/COMn/Fiber mode
• Configuration/Communication/COMn/Serial mode
• Configuration/Communication/COMn/Baud rate
For the serial port parameter settings and hardware setup, see the
technical manual.
Vendor-specific implementation
Section 3
11