What is the best way to interconnect ISYs for a "ALL OFF" command across multiple ISYs on one installation site? Because of 200+ devices, I am using three ISYs to handle links. The first ISY supports the basement, second floor and third floor. The second ISY supports devices on the 1st floor. The last or third ISY supports landscape, pool and terrace devices. I need a "ALL OFF" command on (1) KPL button of the first two ISYs that will turn off most of the outside devices on the third ISY. I have considered strapping the outputs of 2450 I/Os of the first two ISYs to the input of a 2450 I/O on the third ISY.

Wow. I suspect your multiple-ISY installation puts you in an exclusive group. I would imagine most of us could only speculate about what may work in your case.

 

Have you tried adding your "ALL OFF" KPL button to all three ISYs? Once added, can you not create a program on each ISY to turn off the applicable devices in response to a KPL off command?

Hi Robert,

 

Currently, there are only two ways:

1. Send an X10 code from the one linked to the switch and have a program in the others to sense that signal and do an all off

2. Use network resources to do the same ... for this, you have to make sure your ISYs have static IP addresses:

a. the master ISY should have network module

b. in the program for the master ISY, create a resource to:

http://your.isy1.ip.address/nodes/[the all off scene address]/cmd/DFOF

http://your.isy2.ip.address/nodes/[the all off scene address]/cmd/DFOF

c. In the resource, you want to make sure you use HTTP, GET, and add an Authorization header with the userid/pwd of each

 

The first one is much simpler but X10 signals may get lost in the presence of all the traffic.

 

With kind regards,

Michel