1) I can see that there is a "Write Fail" in system event list (see PIC_2). How do I correct the OPC overload?
2) In this example I try to send a variable to PLC_Connect, the "property transfer def." aspect is created under the PLC_Connect object (See PIC_3). Where will I place the "property transfer def." aspect when I want to send a variable to a Control builder application variable?
1) Write Fail does not necessarily mean overload.
Typically you also get "Transaction Overrun" in parallel, or only overruns when source is sending updates faster than it takes to write to the destination.
Check the following:
a) Since this is PLCC the property must be "Controllable" to allow writing
b) Data types must be compatible (check source's and destination's data types).
c) Operator Message List may tell you more details