The compact PAC all have same shap, same system architecture. With different software or communication interface, they can be classfied to several solutions as following
The controller fully supports all five of the IEC61131-3 standard PLC languages.
It supports Modbus protocol and can link to distributed I/O modules with Modbus or DCON protocol via the RS-232/485 or Ethernet.
I/O unit with Modbus/TCP and Modbus/RTU protocol.
PC. HMI or PLC can ommunicate with it via the RS-232/485 or Ethernet, It is also a programmable controller.