communicate to 3rd party HMI via Codesys V3 protocol in ctrX PLC >=1.20

[Yan_Lin]

Hi,i'm handing a project that needs communication between ctrlx core2 and weinview via codesys V3 . 

i import the xml tags sucessfully into HMI , and set the username and password for login ctrlx core. 

but hmi shows " device no response"

According the information you discussed , maybe i should deactive the " encryped communication settings" .

But my ctrlx works version is 1.20.5 , i can't find this settings? any way to solve this problem?

[CodeShepherd · Accepted solution]

Moved to own topic from "How to use ctrlX CORE to communicate to 3rd party HMI via Codesys V3 protocol?".

In general insecure communication will not longer be supported in current and later versions (>= 1.20) of ctrlX OS. So disabling encryption will not longer be available as it is not state of the art and exposes communication to attackers.

Please check with the HMI supplier to get a version of their system that is supporting encryption. In an very early state of this discussion a customer found that HMI has some settings or could get an update to support it.