4 Hardware description4.1 Propertiesn SPEED7 technology and SPEED-Bus integratedn 4Mbyte work memory integrated (2Mbyte code, 2Mbyte data)n Work memory expandable to max. 8Mbyte (4Mbyte code, 4Mbyte data)n 8Mbyte load memoryn X3: PROFIBUS DP/PtP interface: PROFIBUS DP master (DP-V0, DP-V1)n X8: PROFINET IO controller: PROFINET in accordance with conformance class Awith integrated Ethernet CPn X5: Ethernet PG/OP channeln X2: MPI interfacen Slot for external memory cards (lockable)n Status LEDs for operating state and diagnosticsn Real-time clock battery bufferedn I/O address range digital/analog 8191byten 2048 timern 2048 countern 16384 flag byteType Order number DescriptionCPU 317PN 317-4PN23 SPEED-Bus, MPI interface, card slot, real time clock, Ethernetinterface for PG/OP, PROFIBUS DP master, PROFINET IO con-trollerCPU 317-4PN23Ordering dataVIPA System 300S+ Hardware descriptionPropertiesHB140 | CPU | 317-4PN23 | en | 18-01 27