We have a customer project where we are noticing extremely slow solving of expression tags (like simple evaluation of a few bits to create an integer value taking 10 seconds). For instance, we look at the status of a bit with an OPC tag looking at data in a PLC, and we have an expression tag that looks at the value of that boolean OPC tag and does an “if” statement to provide a resulting tag value for that expression tag that is a string with either “Y” or “N”. We have other instances where we are using expression tags to create a integer number for the value of the expression tag using a “binEnc” based on the evaluation of several OPC tags bit values.
Any ideas???