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Lee, I think I have heard of several problems regarding the default on level being set to 0%. I agree that the obvious default condition should be switch ON=relay ON. It would be much more logical to provide an optional setting for the IOLinc to reverse the relay function, instead of having to remember the ON level. It's like the relay contact labelling on the IOLinc. In every other context I deal in, the NC terminal is connected to the common terminal on a relay when it is NOT POWERED! That is considered its NORMAL CONDITION. For some reason, Smarthome considers it to be the opposite. I'm sure we'll run in to each other in a future post. I really appreciate the detailed knowledge, and responsiveness. Thanks.....

Lee, Thank you, for your research on this. I posted a detailed reply to you earlier with the results of the diagnostics and the link table, but it seems to be lost somewhere. You are correct, it is the brightness level that will change the relay response to turn on from an ON command. If you leave the on level set to the default (0) the link value is 00 00 00 in the last three positions. If you set the on level to 100%, the value is FF 00 00. In reviewing one of the links to the WIKI, they mention it, but it could stand some clarification. It would also be useful to put it in the troubleshooting section, because I would guess that the problem is not uncommon.

Lee, thanks for taking time to reply. I am using latching mode. When you link the units manually, you put the IOLinc in the mode you want it to respond to an ON command. This doesn't seem to have any effect if you're programming it through the ISY using a scene control. It would seem to be a glitch in the way ISY programs that particular device (2450). I have even tried Querying each device before I add them to the scene so that the ISY would be aware of their current state. Thanks, Dave

I am using a button on a KeypadLinc (2486D v5.1) to control the relay on an IoLinc (2450 v1.5). When I create a scene through the ISY-99 (v2.18.16), the relay turns off when the button is on, and visa-versa. If I delete the scene, and link the devices manually, they work properly. I have tried every possible status when setting up the linc in the ISY, such as setting the relay on with the switch off, the relay on with the switch on, etc. I initially just wired the contacts backwards to accommodate for it, but every time the power fails, the 2450 comes back up with the relay off, which turns the lights on. What am I missing?