I am working in a caster.There was a punching machine to mark slab.Its controller was S5 115u.This siemens plc was getting marking id from abb plc Mp200/1.Mp200/1 has communication processor 180f which supports siemens 3964 protocol.Now this siemens plcs5115u has been upgraded to s7 300.I am not getting data(marking id) at siemens plc end.