This manual introduces the MELSEC‑A series programmable controller, covering its architecture, instruction set, and programming concepts. It is intended for engineers and technicians who need to configure, program, and maintain the controller in industrial automation applications.
The document includes sections on basic and advanced instructions, sequential control commands, error‑code tables, and appendices with register maps and communication details, helping users to develop reliable ladder‑logic programs and troubleshoot system issues. This manual is written in Chinese.
Use the STOP instruction (ST0P) to halt a sequential control program.
The main program ends with the FEND instruction.