Microcontroller, PLC, and Wecon HMI

I have a small powder filling machine with an unknown type of plc or microcontroller and HMI types of wecon, for plc I have some problems with the software of plc which is used to write or edit the code, but for HMI the motherboard is damaged, so if can I access to PLC I will use another HMI to solve this problem.

any other information you will get lately