{}

Our Brands

Impact-Company-Logo-English Black-01-177x54

Welcome to the Schneider Electric Website

Welcome to our website.

Search FAQs

What does the error "Write Queue Overflow" mean on the Magelis HMI?

Issue:
The Magelis HMI is showing an error "Write Queue Overflow" at the bottom of the screen.

Product Line:
Magelis HMI programmed with Vijeo Designer (all versions), XBTG, XBTGT, XBTGK, HMISTU, HMISTO, HMIGTU, HMIGTO, HMIGK, iPC.

Resolution:
In Vijeo Designer, there is a write queue that can hold up to 100 write requests at any given time. If the PLC is too slow to process these write packets, the HMI will detect this and the error will be displayed on the HMI to inform that the writes are not making it to the PLC. Typical causes of this error are a slow baud rate and too many actions writing too often. Check if your periodic actions are running too fast for the PLC to catch up.

When the queue is full, the oldest write requests are thrown out as new ones come in.

Schneider Electric Ireland

Explore more
Range:
Users group

Discuss this topic with experts

Visit our Community for first-hand insights from experts and peers on this topic and more.
Explore more
Range: