DNP3 Serial Channel Tag

Help Contents


The DNP3 Serial Channel Tag Channel Tag Icon provides a DNP3 serial SCADA communication channel to DNP3 Outstations.

Configuration Properties

The DNP3 Serial Channel Tag supports the configuration properties of the DNP3 Channel Tag plus these properties:

Property Type Version Description
Mode WSTRING 3.46 The serial port communication speed, data format and handshake mode.
Click the Browse button Browse button to edit the serial port mode using the Serial Port Mode Editor. You can also type in the serial port mode string directly. See Serial Port Mode String for how this property is formatted.
Port WSTRING 3.46 The name of the communications port. For example 'COM1:'

For other DNP3 channel configuration properties see DNP3 Channel Tag.

Tag Commands

The DNP3 Serial Channel Tag supports the tag commands of the DNP3 Channel Tag.

Example Configuration

This is an example configuration for a DNP3 serial channel:

PortCOM1Use COM1 as the connection.
ModeBaud=19200 Parity=N Data=8 Stop=1The data format is 8 data bits, 1 stop bit and no parity check.
SourceAddress101Fernhill SCADA uses DNP3 address 101.
DataLinkConfirmFor large messagesLarge messages that span multiple data link frames are sent using confirmed data.
DataLinkRetries1The number of times the DNP3 Driver will try to send a confirmed data link frame.
DataLinkTimeoutT#1sThe time the DNP3 Driver will wait for a confirmation to a confirmed data link frame.
ReplyTimeoutT#5sThe timeout for application requests to the Outstation is 5 seconds.

Relationships to Other Tag Types

The DNP3 Serial Channel Tag builds on the features of these tag types:

Further Information

DNP3 Outstation Tag

To learn about the DNP3 Outstation Tags that can be associated with DNP3 Serial Channel Tags.

Alarm Conditions

To learn about abnormal conditions in SCADA applications.

Serial Port Mode Editor

To learn how to set the communications speed, data format, and handshake mode of the serial port.


For the meaning of terms used in Fernhill SCADA.