What are the differences between SIMATIC S7-300 and S7-1500 PLCs? - YouTube
SIEMENS PLC PROGRAMMING FOR BEGINNERS: LEARN SIEMENS PLC PROGRAMMING WITH S7 -300/400 Automating Project Examples inside TIA portal and Factory IO - Kindle edition by Wicks, Daniel H. Children Kindle eBooks @ Amazon.com.
What are the Differences Between SIMATIC S7-300 & S7-1500 PLCs? | RealPars
6ES7313-6BG04-0AB0 | Siemens, SIMATIC S7-300, PLC CPU - 16 (Digital) Inputs, 16 (Digital) Outputs, Digital, For Use With SIMATIC S7-300 | RS