Device No Response

Communication Knowledgebase
Device No Response
none 0.0 0
1
  • HMI Model:
  • EasyBuilder Pro Version: 6.09.02

I have had this problem with many different HMI programs. I have my PLC and HMI communicating without any problem. I will make a change to the PLC offline and then download to the PLC. I import the tag database to the HMI. Once I go back online with the PLC, I get the “Device No Response” message on the screen. The only edits I have made were program based.

My two questions:

  1. How do I prevent this from happening?
  2. How do I fix the problem when it happens. The only method I have found the fixes the problem is redownloading to the HMI with the PLC online. However this is not a very solid solution. Is there certain parameters I can change to fix/prevent this problem?