Chapter 1 0BIntroduction 1.2 System Frameworks The AH500 series programmable logic controller is a medium type of programmable logic control system. The execution speed and the memory capacity are increased. Besides, the complete program development function of function blocks is supported. In order to meet users’ more advanced application requirements, the AH500 series programmable logic controllers provide more flexible system extension frameworks. Under such system frameworks, users do not need to use several CPU modules to control the system because of the fact that there are too many I/O points or the equipment is too far away.
The completeness of the system is retained, and users can be more efficient in developing the projects. The minimum framework requirement for the AH500 system: To create the AH500 system, one main backplane, one power supply module, and one CPU module are needed for the operation of the CPU module. Main backplane (four-slot AHBP04M1-5A) The common framework of the AH500 system (for original equipment manufacturers): The AH500 system can meet most equipment development requirements in the application field of original equipment manufacturers. Generally speaking, one eight-slot main backplane or one twelve-slot main backplane is chosen.
Some advanced equipment can be used with a six-slot extension backplane or an eight-slot extension backplane under the original framework to increase the number of I/O points and the number of axes, or decrease the wiring cost. The framework: Rack 1~rack 8 7 backplanes ｝ ． ． ． ． ． ． 1-3 Power supply module CPU module