How to diagnostic error message on HMI Harmony HMISTM6 (Gateway Box Model)?
On Harmony HMISTM6BOX (Gateway Box model), even if the screen may be connected, mostly, the HMISTM6BOX is used without screen connected.
In case of error message, the diagnostic can be done using the LED status. The goal of this article is to shows, the different led status.
This article is applicable for HMISTM6BOX & EcoStruxure Operator Terminal Expert 3.2 (Minimum).

*1: For details of error message, refer to [Help] – [Troubleshoot] – [Error Message List] on EcoStruxure Operator Terminal Expert
In case of error message, the diagnostic can be done using the LED status. The goal of this article is to shows, the different led status.
This article is applicable for HMISTM6BOX & EcoStruxure Operator Terminal Expert 3.2 (Minimum).
*1: For details of error message, refer to [Help] – [Troubleshoot] – [Error Message List] on EcoStruxure Operator Terminal Expert
Released for: Schneider Electric Ireland










Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Centre
Search topic-related frequently asked questions to find answers you need.