Chapter 1 0BIntroduction 1.3 Operation of the CPU module The CPU module is the nucleus of the AH500 system. It is responsible for not only the execution of the logic program, but also the data exchange and the processing of the communication data. The relation between the AH500 system and the external devices are illustrated below. External input device AH500 system External output device The operation of the CPU module is illustrated above. The system procedures related to the initialization, the diagnosis, and the communication, and the program procedures related to the external interrupts and timed interrupts are simplified. Users can refer to other manuals for more information.
The operation of the CPU module is described below. 1-9 Switch Temperature Pressure CPU module System operation Output Input I/O module refresh module Program operation Relay AC motor drive Electric valve