6ES7215-1AG40-0XB0 Siemens | Siemens SIMATIC S7-1200 Series PLC CPU for Use with SIMATIC S7-1200 Series, 20.4 → 28.8 V Supply, Digital, | 862-4487 | RS Components
Siemens S7-300/400 Ethernet Connection Guide
Simple Steps to Connect a SIMATIC S7-200 to a SIMATIC S7-300/400 via Ethernet » Patti Engineering
Scan for S7 controllers in your network - MB Datasuite
Link data from PLC S7-1500 to PLC S7-1500 by using LAN cable part1 - YouTube
Easy to connect PLC S7-200 SMART communication with LAN cable by using Step7 MicroWin SMART V2.5 - YouTube