Siemens PLC S7-1200 Hardware Configuration, Wiring and Programming with Tia portal (Part #1) | Mindstorm Engineering presents Free e-Workshop of Siemens s7-1200 PLC. This would be very help full for students and
Siemens Simatic S7 Starter Kit 1200 PLC
Using a High-Speed Counter's Hardware Interrupt to Peripherally Write to an Output on a Siemens 1200 PLC | DMC, Inc.