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Siemens SIMATIC S7-1500 6ES7511-1AK02-0AB0
***spare part*** SIMATIC S7-1500, CPU 1511-1 PN, central processing unit with work memory 150 KB for program and 1 MB for data, 1st interface: PROFINET IRT with 2-port switch, 60 ns bit performance, SIMATIC Memory Card required