AVEVA™ Plant SCADA

Communication Settings

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Communication Settings

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Last UpdatedAug 04, 2025
2 minute read

To establish communication with a device, the associated Board, Port and I/O Device require configuration in Plant SCADA Studio's Topology activity.

If you use the Express Communications Wizard to connect to a device, these settings will be automatically configured for you. If you need to manually configure them, you should use the values outlined below.

Boards

Serial Communication

The DNPR driver uses standard serial communications via a standard COM port or a dedicated serial board.

Field	Value
Board name	This field is user defined. (e.g. "Board1")
Board type	COMX
Address	0
I/O port
Interrupt
Special opt.
Comments	This field is user defined and is not used by the driver.

TCP/IP Communication

Field	Value
Board name	This field is user defined. (e.g. "Board1")
Board type	TCP/IP
Address	0
I/O port
Interrupt
Special opt.
Comments	This field is user defined and is not used by the driver.

Ports

Serial communication

Field	Value
Port Name	This field is user defined.
Port number	ComPort
Board name	Refers to the board previously defined in the ‘boards’ settings.
Baud rate	9600 (allowable values: 2400 – 38400)
Data bits	8
Stop bits	1
Parity	None
Special Opt	Leave this field blank
Comment	This field is user defined and is not used by the driver.

TCP/IP communication

Field	Value
Port Name	This field is user defined.
Port number
Board name	Refers to the board previously defined in the ‘boards’ settings.
Baud rate	Leave this field blank
Data bits	Leave this field blank
Stop bits	Leave this field blank
Parity	Leave this field blank
Special Opt	-Iaaa.bbb.ccc.ddd –Pe (Allowable values: <-LP> <-U\|-T>) where: aaa.bbb.ccc.ddd is the IP address of the device e is the port number of the device -U for use when UDP being used (TCP is the default)
Comment	This field is user defined and is not used by the driver.

Note: The maximum number of ports you can use is 512.

I/O Devices

Field	Value
Name	This field is user defined.
Number	The I/O device number. A unique number is required for each logical device, however primary and standby redundant devices require the same number.
Address	DNP3_address Citect.INI_section_name Example: 128 SITERTU See DNPR - Device Address.
Protocol	DNPR
Port name	Refers to the port previously defined in the ‘ports’ settings.
Comment	This field is user defined and is not used by the driver.
Minimum Update Time	This field is used to determine the frequency of the integrity polls. If this field is none zero and is smaller than the integrity poll frequency from the Citect.ini parameters, then this field will be used and the poll period will be recalculated. INI integrity poll frequency: Integrity poll = INI poll period * (INI event poll ratio + 1), For more details, see the following INI parameters: [DNPR]EventPollPeriodDefault [<unit>]EventPollPeriod [DNPR]EventPollRatioDefault [<unit>]EventPollRatio New poll period recalculation: Poll period = Minimum Update Time / (INI event poll ratio + 1). Note: If the poll period is 0 then it will be defaulted to 10 seconds

AVEVA™ Plant SCADA