Installation and Connections
WebRelay Users Manual
2.5.4 Multiple WebRelay Operation (no computer required)
For some applications, it is useful to for one WebRelay
to control multiple WebRelays at remote
locations. There is not a way to configure a single WebRelay
to control multiple WebRelays directly, but
it is possible to set up multiple WebRelays in a daisy-chain mode so that one WebRelay
controls a
second WebRelay
which, in turn, controls a third WebRelay
and so on.
In the illustration below, each WebRelay is numbered (1, 2, 3, and 4). A mechanical switch controls
WebRelay
1. Then WebRelay
1 controls WebRelay
2, which then controls WebRelay
3, which then
controls WebRelay
4.
This daisy-chain mode is set up by configuring the Relay options in WebRelays 1, 2 and 3 to “
remote
command equals local relay
”. Note that the relay contacts of each WebRelay will be set to the same
state as the contacts of the WebRelay
that is configured to control it and not necessarily to the state of
the switch. In other words, if the switch is 'ON' but a user changes the state of WebRelay 3 to 'OFF' by
changing the relay in the web page, WebRelay
4 will be changed to the 'OFF' state also. Also note that
in this example, WebRelays 2, 3, and 4 are each controlling load devices but WebRelay
1 is not;
however, a load could be connected to WebRelay 1 as well.
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Xytronix Research & Design, Inc.
