SIPLUS S7-1500 CPU 1516-3 PN/DP rail based on 6ES7516-3AN02-0AB0 with conformalcoating. -40 +70 C. OT4 with ST1/2 (+85 C for 10 minutes). heat sink. no PS usable. central processing unit with work memory 1 MB for program and 5 MB for data. 1st interface PROFINET IRT with 2-port switch. 2nd interface PROFINET RT. 3rd interface PROFIBUS. 10 ns bit performance. SIMATIC Memory Card required