SIPLUS S7-1500 CPU 1515R-2 PN based on 6ES7515-2RN03-0AB0 with conformal coating -40...+70 °C . central processing unit with work memory 1 MB for program and 4.5 MB for data, 1st interface: PROFINET RT with 2-port switch, 2nd interface: PROFINET, SIMATIC Memory Card required