Table of Contents
Advertisement
This mode is well suitable for upgrading the original RS485 network to Ethernet, the key of the
mode is that all the ES-ETH-PPI multicast section address of the same group must keep identical
to local port and remote host port number, that is to say, multicast section address and the port
number is same,then these ES-THE-PPI belong to the same group, the data sent out by any one
will be received by other ES-ETH-PPI of the same group, and there is no master-slave distinction.
Under the Multicast mode, the ES-ETH-PPI grouping is only logic, no need physical grouping,
that is to say, there can be multiple groups in the same network, they are Independent of each
other.
Of course, you still need to set each ES-ETH-PPI as a different IP address, every ES-ETH-PPI
serial port parameters are the same as PLC serial port parameters.
(6) Remote communication in the internet
ES-ETH-PPI can achieve the worldwide remote communication through the Internet, it will use
the external network IP address of the router, the router external network address is different when
the router is started every time, because the router will be randomly assigned to one IP address
from the Internet when it 's powered every time, so this will result in trouble for remote
communication through the Internet, There are two following methods to solve this problem:
Apply to buy a fixed IP address from the telecom, the fee will be higher.
Use the dynamic domain name resolution.you can apply for a free or paid domain name from
dynamic domain name service provider, then use domain name instead of IP address; so that
regardless of changes in IP address, domain name will point to IP addresses in real time, like as
we usually visit the website .
___________________________________________________________________________________________________
- 26 -
Advertisement
Table of Contents
