====== Connecting to Siemens S7-300 PLC ======

The ISO-on-TCP protocol is used for connection to the PLC, see [[connecting_to_s7-1200|Connecting to 1200]] for your reference. 

Input correct **TSAP** number in the WebHMI connection settings:
  *for CPU with built-in Ethernet port use TSAP number 0200, 0301
  *for CPU without Ethernet port and CP343-1 Ethernet communication module use TSAP number 0302