Read-only rules for OPC server variables
I use ABB controller AC800M and OPC DA Server for AC 800M. Can I set some variables with read-only rules (from OPC clients)?
Some OPC server have this option, but in ABB I don't find options. I can hide variables for OPC clients in the controller (with attribute "hidden"), but I don't find option for read/write permissions.
Some OPC server have this option, but in ABB I don't find options. I can hide variables for OPC clients in the controller (with attribute "hidden"), but I don't find option for read/write permissions.
Voted best answer
It is possible to set read-only permission for AC 800M OPC variables.
You need to configure "Property Permissions" tab in a program aspect.
See an example attached:
In this example value of MyVar_Readonly variable cannot be changed from OPC.
MyVar_Readonly value can be changed.
Add new comment