SIMATIC S7-1500, CPU 1511-1 PN, Central processing unit with working memory 150 KB for program and 1 MB for data, 1. interface: PROFINET IRT with 2 port switch, 60 NS bit-perform- ance, SIMATIC memory card necessary. Product is being phased out. New 6ES75111A030AB0 offers more performance, memory and energy efficiency at no additional cost. The S7-1500 CPUs replace previous version with full compatibility. See SIOS entry 109815653. If customer wants predecessor, please note production has moved to China; ensure the CoO is OK before proceeding.