The Siemens S7 Ethernet PLC Tag
provides a logical link to a Siemens S7 PLC via an Ethernet network.
The Siemens S7 Ethernet PLC Tag supports the configuration properties of the Siemens S7 PLC Tag plus these properties:
Property | Type | Version | Description |
---|---|---|---|
Channel | Reference | 1.4 | The Siemens S7 Ethernet Channel Tag to the PLC. |
DestinationTSAP | WSTRING | 1.4 | The Transfer Service Access Point within the PLC. |
SourceTSAP | WSTRING | 1.4 | The Transfer Service Access Point of Fernhill SCADA. |
Note: Only one Siemens S7 Ethernet PLC Tag can reference any one Siemens S7 Ethernet Channel Tag. If you wish to connect to multiple Siemens S7 PLC Devices using Ethernet, configure a separate Siemens S7 Ethernet Channel Tag for each PLC.
To establish a connection between Fernhill SCADA and a Siemens PLC, you need to configure appropriate values for the DestinationTSAP and SourceTSAP properties. The values you should enter depend on:
If you are not using preconfigured connections use these values for the SourceTSAP and DestinationTSAP properties:
PLC Type | SourceTSAP | DestinationTSAP |
---|---|---|
S7-200 | 4D.57 | 4D.57 |
S7-300 | 01.00 | 02.02 |
S7-400 | 01.00 | 02.X Where: X = CPU Rack * 32 + CPU Slot |
S7-1200 | 01.00 | 02.01 |
Note: The number of available connections using these TSAP values may be limited. Fernhill SCADA may not connect if all the available connections are in use.
Using a preconfigured connection ensures that Fernhill SCADA can establish a connection to the PLC. Using the appropriate PLC configuration tool, create an S7 Connection that acts as a server. Set the SourceTSAP and DestinationTSAP properties in Fernhill SCADA to match the TSAP properties of the S7 Connection configured in the PLC.
The Siemens S7 Ethernet PLC Tag supports the tag commands of the Siemens S7 PLC Tag.
The Siemens S7 Ethernet PLC Tag builds on the features of these tag types:
For properties common to all Siemens S7 PLC Devices.
Siemens S7 Ethernet Channel Tag
For information about the Ethernet channels that can be associated with this type of PLC.
Configuring Tags for Siemens S7 Ethernet Communication
For a guide to manually configure tags for S7 Ethernet Communication.
To learn about abnormal conditions in SCADA applications.
For the meaning of terms used in Fernhill SCADA.