provides a DNP3 serial SCADA communication channel to DNP3 Outstations.
The DNP3 Serial Channel Tag
provides a DNP3 serial SCADA communication channel to DNP3 Outstations.
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  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.
The DNP3 Serial Channel Tag supports the tag commands of the DNP3 Channel Tag.
This is an example configuration for a DNP3 serial channel:
| Property | Value | Comment |
|---|---|---|
| Port | COM1 | Use COM1 as the connection. |
| Mode | Baud=19200 Parity=N Data=8 Stop=1 | The data format is 8 data bits, 1 stop bit and no parity check. |
| SourceAddress | 101 | Fernhill SCADA uses DNP3 address 101. |
| DataLinkConfirm | 1 - For large messages | Large messages that span multiple data link frames are sent using confirmed data. |
| DataLinkRetries | 1 | The number of times the DNP3 Driver will try to send a confirmed data link frame. |
| DataLinkTimeout | T#1s | The time the DNP3 Driver will wait for a confirmation to a confirmed data link frame. |
| ReplyTimeout | T#5s | The timeout for application requests to the Outstation is 5 seconds. |
The DNP3 Serial Channel Tag builds on the features of these tag types:
To learn about the DNP3 Outstation Tags that can be associated with DNP3 Serial Channel Tags.
To learn about abnormal conditions in SCADA applications.
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.