Siemens Control Unit 6ES7 414-2XG03-0AB0 CPU 414-2 Simatic S7-400 Version 04 4025515128731 | eBay
Automating with SIMATIC S7-400 inside TIA Portal: Configuring, Programming and Testing with STEP 7 Professional: Berger, Hans: 9783895783838: Amazon.com: Books
SIMATIC S7-400 - PS407 - Siemens Power Supply – Inosaki
Compatible with Siemens PLC Programming Cable S7-200/300/400 Data Download Line 6ES7972-0CB20-0XA0,USB/MPI PC Adapter USB Cable for Siemen S7-200/300/ 400 PLC MPI/DP/PPI Programming Cable
6 SIMATIC S7-400 Automation System Hardware and Installation - YouTube