The memory for program and data is integrated into the SPEED7 CPU in 300S series, therefore the CPUs can be operated without any additional memory. Depending on the CPU type, the memory can be extended by VIPA memory cards up to 8 MByte. All 300S CPU systems are equipped with Ethernet interface for PU/OP communication. The CP343 interface for TCP/IP communication is integratedinto the ‘NET’ CPU. The compact SPEED7 CPUs with integrated I/O units are suitable for low-cost applications. Thaks to the high performance and extendable memory, the 300S system is especially suitable for medium and high demanding applications.