01 / Description Processor module. Memory 512kB. Interfaces: Ethernet, 2x RS232/485, FBP. Display. 02 / PM573-ETH Technical Specifications Complete technical data Product designation PM573-ETH Product ID / Part number 1SAP130300R0271 Product family ABB AC500 processor module Module function Processor module Product type PLC-AC500 Program memory 512 kB, Flash EPROM and RAM User data memory 512 kB, including 288 kB saved Total user program memory 2048 kB Memory card Plug-in SD