6ES7158-3AD10-0XA0 SIMATIC PN/PN Coupler for deterministic data exchange between max.4 PN-Controller per subnet, also from subnet to subnet, PROFIsafe data exchange, I/O-, MSI-, MSO- and data record communication, redundant power supply, PN-connection via SIMATIC BusAdapter (BA), delivery w/o BusAdapter
6ES7521-1BH00-0AB0 simatic s7-1500, digital input module di16 x dc24v, 16 channels in groups of 16; input delay 0.05 ... 20ms; input type 3 (iec 61131); diagnosis