このアプリは、実際のPLCの代わりとなるサーバーとしての通信エミュレーターです。
The app (as a server or a communication emulator) is designed to help you develop client software for Mitsubishi PLCs which support MC protocol - QnA 3E (TCP). In other words, it emulates the communication protocol and may be substituted for an actual H/W PLC to debug and verify your program.