We have a system that we install at customer sites that has much of the configuration and status for the underlying PLC AOI exposed to the HMI. We are now looking at way to try and optimize that data flow from the PLC AOI up to Ignition.
Currently we have all the non configuration tags in the default tag group, and most of the configuration tags on a leased tag group.
Much of this data is a boolean data type. What I’d like to do is try and utilize derived tags to read and write to a single DINT to move from 20 individual boolean tags to one DINT tag.
Has anyone done something similar? Is there another option that I’m missing?
The underlying PLC is an AB Logix PLC.
What I think we ultimately want to do is to reduce the total amount of tags flowing between the PLC and the OPC-UA server in order to keep the PLC load factor down. On smaller systems we don’t have an issue, but on larger systems sometimes the tag count can get pretty large… like 100K tags plus.
Thanks for any recommendations…