CP-9131 is the first version of ODOT Automation PLC, the programming environment follows the IEC61131-3 international standard programmable system, and it supports 5 programming languages such as Instruction List (IL), Ladder Diagram (LD), Structured Text (ST), Function Block Diagram (CFC/FBD) and Sequential Function Chart (SFC). The PLC could support 32 pcs of IO modules, and its program storage supports 127Kbyte, data storage supports 52Kbyte, the data storage area contains input area of 1K(1024Byte), output area of 1K(1024Byte), and intermediate variable area of 50K. With built-in standard serial communication RS485 interface, it carries with 2 RJ45 interfaces which is a small…