SIMATIC DP, CPU 1510SP F-1 PN for ET 200SP, Central module, PL/Category in accordance with ISO13849-1: PL e/Cat. 4, SIL in accordance with IEC 61508: SIL 3, Interface: PROFINET IRT with 3 Port switch, Supply voltage: 24 V DC (19.2–28.8 V DC), Max. switching current: 4.7 A, Working memory: 150 kByte program; 750 kByte data, 72 NS Bit performance, SIMATIC memory card and bus adapter for Port 1 and 2 required