---
title: Communication faults with the Ewon Gateway
description: talk2web lost communication with the Ewon
---

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# Communication faults with the Ewon Gateway

## In case it is not possible to access the HMI from talk2web, there is possibly lost communication with the Ewon. For remedy the following things can be checked and corrected:

| **Possible problems** | **Remedy** |
| --- | --- |
| Is the Ewon module powered ON? | ·         Measure the voltage on the power supply from the 24v transformer and make sure it is correct according to electrical drawings. ·         Check for any blown fuses in the cabinet. Re-activate them if necessary. |
| Is the ethernet cable between the Festo configuration and Filter System connected correctly according to electrical drawings? ·         One end of the cable is connected to the Ewon in port 4? ·         The other end is connected to Ethernet switch in the Filter System cabinet? | ·         Correct the cables according to electrical drawings. |
| Is there communication light (Green LED blinking) where the ethernet cable is connected? | ·         Make sure the cable is properly connected in the port. ·         Check for any loose connection in cable and/or port by adjusting the cable in the port. Re-install the cable in another port on the ethernet switch if loose connection is found. ·         Check the cable for any faults with a network tester and replace cable if faults are found. ·         Measure the voltage on the ethernet switch to make sure there is power on it. Replace switch if power supply is ok according to electrical drawings. **NB** it is important that the green LED is blinking, as this indicates there is communication exchange. |

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