> For the complete documentation index, see [llms.txt](https://manual.senseforce.io/manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.senseforce.io/manual/senseforce-edge/edge-configuration/input-plugins.md).

# Input plugins

Senseforce Edge comes with eight available input plugins

| SQL              | Connects to and reads Microsoft SQL Servers >= 2008, Oracle or SAP Hana. Allows to continually read historical as well as new data. Uses polling and remembers which row was the last read. |
| ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| SQLite           | Connects to and reads from SQLite databases. Allows to continually read historical as well as new data. Uses polling and remembers which row was the last read.                             |
| OPCUA            | Subscribes to an OPC UA server using the opc.tcp protocol. Notification-based message transmission is used to only transmit changes in data.                                                |
| REST             | Call a remote REST endpoint to get data. Is implemented to poll data and remembers the last read message.                                                                                   |
| TCP              | Sets up a TCP-socket based listener, allowing to wait for incoming messages                                                                                                                 |
| XML file parsing | Continually reads XML files and parses their content. Remembers the last read XML file, therefore can be used to read continuously generated files.                                         |
| SINUMERIK        | Connects to SIEMENS SINUMERIK systems and can read data and Alarms from the SINUMERIKs PLC as well as NCK controller                                                                        |
| Heidenhain       | Connects to Heidenhain PLCs which support the DNC communication protocol. It can read Errors as well as data from the Heidenhain COM structures and memory areas.                           |