PM802F [caption id="attachment_1807" align="aligncenter" width="600"] PM802F[/caption] 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