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Should I install a radio link control two "relay" that need to communicate with each other in a TCP / IP network. No internet connection therefore excludes all those who work in the cloud and no interaction with web or application. The system must be completely independent and work on a network "Internal" and closed. Furthermore, the relay must also have an input (controlled by a level sensor) to be used to send the ON / OFF command to the remote relay. If possible, the ON / OFF times of the remote relay should be timed.
For the WiFi bridge I have no major difficulties, then realize the internal network is not a problem. But I can not find a "relay" IP that has an input which is controlled by the level sensor contact (the sensor uses a relay so I have a clean contact) can send a command that allows you to activate the remote relay. As mentioned, I have no internet network and cannot use apps or web pages.
Any suggestions on the material to use?
Our application dataExchange do it for you, using two CPU modules SlimLine Compact Ethernet that have 6 digital inputs, 2 analog inputs and 4 digital outputs each you can exchange the I / O between one system and another on an Ethernet connection.
In your case you will connect the ethernet port to your WiFi network and the two systems will communicate via the WiFi connection. As far as timing is concerned, systems are no problem SlimLine they are programmable and you can make all the timings you want.
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