The Siemens SIMATIC S7-300 has central processing unit with 1.5 MB work memory has different interface such as 1st interface MPI/DP 12 Mbit/s. It has 2nd interface Ethernet PROFINET, with 2-port switch and micro memory card required.
Power loss: 4.65 W Retentive data area (incl. timers, counters, flags), max. 256 kbyte Number of expansion units, max:. 3
