PM802F

PM802F

AC800F controller board ABB PM802F/ABB PM803F has 6 slots and 1 power slot, among which 2 slots adopt fast DMA technology to directly communicate with CPU for high-speed data. These 2 slots are inserted into Ethernet modules to realize the information transfer of control layer based on standard TCP/IP protocol Ethernet. Remaining 4 slots F1… F4 uses interrupt mode to exchange data with CPU and main memory. Each module can generate its own interrupt source. Powerful interrupt controller and advanced multi-task operating system can quickly respond to interrupt information from these four communication modules and exchange data with them quickly. At the same time, the error report information of communication modules can be received in real time through priority control. The bandwidth of the data bus of CPU board is 100MB/s, which ensures that the large amount of information data from various communication modules can be transferred to CPU unit quickly for processing. In order to ensure the maximum accuracy of data, the main memory chip of AC800F CPU unit has error detection and modification ability, which can check the 2-bit error of 32-bit data word and modify the 1-bit error of PM803 motherboard to improve the storage capacity of the main memory to 16MB, and realize the implementation of large capacity control program on the AC800F controller. But procedures are in place to keep the equipment up to date.

The controller (English name :controller) refers to the main command device that changes the wiring of the main circuit or control circuit and changes the resistance value in the circuit to control the starting, speed regulation, braking and reverse of the motor in a predetermined order. It is composed of program counter, instruction register, instruction decoder, timing generator and operation controller. It is the “decision-making mechanism” that issues commands, that is, it completes the operation of coordinating and directing the whole computer system.