# Transparent

## Transparent Mode: How it works & benefits

The transparent mode enables direct transmission of serial data over TCP/IP networks.

**Configuration:**

* Each serial port is assigned a unique TCP port
* Example: Serial Port 1 → TCP 7001, Serial Port 4 → TCP 7004

**Advantages:**

* No special protocol conversion required
* Direct integration into existing systems
* Suitable for legacy devices with a serial interface
* Enables remote access over the network

### Selection for Serial Transparent Mode

* The mode can be selected for each individual serial port. Serial expansion cards that are plugged into the expansion slot can also be selected.

<figure><img src="/files/6645820dbd009a19465aa4a893b2547e86a0e457" alt=""><figcaption><p>Serial settings overview - selection via drop-down menu "Fieldbus"</p></figcaption></figure>

* The transparent mode can also be used for a plugged-in expansion card.

<figure><img src="/files/aafe5978db1038259bfedd37b2dca9f91fb03e54" alt=""><figcaption><p>RS485 expansion card - selection via the "Fieldbus" drop-down menu</p></figcaption></figure>


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