# Siemens Connectivity

The communication driver for the S7 protocol is implemented as a Siemens Ethernet device. It offers high-performance device polling and supports various data formats. **Please note that the driver is for TCP/IP networks only.**

### Key Features <a href="#h.r9s5u9nuj6n6" id="h.r9s5u9nuj6n6"></a>

* Communication with CPUs S7-300/S7-400/S7-1200/S7-1500.
* Communication with CPs 343/443.
* Communication with Sinamics.
* Data types: BOOL, BYTE, BYTE ARRAY, WORD, WORD ARRAY, INT, INT ARRAY, DWORD, DWORD ARRAY, DINT, DINT ARRAY, REAL, REAL ARRAY, CHAR ARRAY, DATETIME, DATETIME ARRAY.
* Data areas: DB (Data Blocks), M (Merkers), I (Inputs), Q (Outputs).
* Polling optimization.

{% hint style="info" %}
To get an access to a DBs in PLCs S7-1200 and S7-1500 you will need additional settings on the PLC-side. The required actions are described later in this [<mark style="color:blue;">section</mark>](/tags-and-devices/siemens-connectivity/access-to-dbs-area-in-s7-1200-s7-1500.md)
{% endhint %}


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