Hi, In case you have Automation builder project, the easiest way to export the tags is from the PLC project. It is described in the help how to do that. In my panel builder there are two alternatives - ABB Codesys and ABB Modbus.
Of course, you can connect CP600 and AC500 (or other third party PLC) by means of generic Modbus protocol. With these you have the possibility to import from csv file as well (see the other my post).