Is there any license for the controller or it just for software.
I want to change the controller so should I buy a new license for it.License is also linked with controller or not?
A simplex controller doesn't require a license. However, if your controllers are redundant, you would need to purchase a redundancy license. This license would be linked / assigned to a specific redundant controller pair.
Purnendu Saptarshi
Automation Engineer | Skellig Automation US LLC | Greater Boston Area, MA