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The most economical way to achieve the remote communication in the Internet between the PC
and S7-200PLC is that set the ES-ETH-PPI as the client, set the PC as the server, install and run
the DDNS software on the PC, and set the port mapping for PC on the router of PC side. As shown
below:
Set ES-ETH-PPI network parameters, the gateway must be the same as the router connected with
the ES-ETH-PPI, here you still need to properly set the IP address of DNS, different cities have
different DNS Server IP, you can use all, but usually choose the local DNS,you can search these
addresses from Internet, also can find them from the router which you are using.
Set the serial port parameters of ES-ETH-PPI, please note that you should use 10-bit
communication mode: 8 data bits, no parity, 1 stop bit, that is 8N1.
Set ES-ETH-PPI as TCP Client; remote host IP =domain name of remote PC, here is:
kollew.changeip.net; host port = VCOMM software port number.
