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[PajamaGuy]

Regarding AHP & CM15A.  If I set TRANSCEIVE to NONE, my understanding is that the CM15A will not convert a received RF signal to a PLC.  For instance, an EagleEye set to H1 will send out an RF signal H1-ON - the CM15A will receive the RF and transmit it to AHP via the USB wire.  AHP can/will act on the H1-ON in whatever manner the user has set (macros).  The key is the CM15A will not place an H1-ON onto the powerline.

But, if the CM15A is set to TRANSCEIVE housecode "H", then in addition to the above, the CM15A WILL place an H1-ON signal onto the powerline.

Given the above is correct, the TRANSCEIVE setting of the CM15A has NO EFFECT on what AHP does.  For instance if AHP has a macro that triggers on the H1-ON, and in turn sends a H4-OFF PLC, the CM15A will lay the H4-OFF PLC onto the powerline - correct?

So the transceive setting of the CM15A is only for the RF that it receives from sensors or remotes.

If that's all true, what about AHP's RF commands?  If a macro sends a RF "H4-OFF" signal, and the CM15A is set to NOT transceive H/C: "H", then the CM15A only transmits an RF "H4-OFF", but if it's set to transceive H/C "H", will it do both an RF and a PLC?
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Jeez, now that I wrote all that, I forget what question I'm trying to anwser in the first place...  I think it has to do with I need a failsafe way to turn an appliance OFF and I'm thinking of using an RR501 set to "D1".  If AHP sends both a PLC "D1-OFF" and an RF "D1-OFF", then even it the powerline is flooded or noisy, the RF command should ensure the device goes OFF - right?  (and the TRANSCEIVE setting of the CM15A has nothing to do with it?)

[Alan V]

Someone correct me if I'm wrong, but my understanding is that the CM15A only transmits RF to control camera mounts such as Ninja and Vanguard.  It does not transmit RF house/ unit codes.

[Puck]

Someone correct me if I'm wrong, but my understanding is that the CM15A only transmits RF to control camera mounts such as Ninja and Vanguard.  It does not transmit RF house/ unit codes.

It can transmit any of the 256 X10 codes (HC/UC). It can send ON & OFF for each.

PajamaGuy: When you send an RF command, there is no accompanying PLC signal; just RF (I use this method via a TM751 to reset my V572RF32 when it storms).

[BaBaLou.]

If I can just step in, can I then just plug the V572 into the TM751, also make sure to have the macro send a RF on/off to the transceiver instead of an LC, does it matter?, that could then be timed on a regular schedule or do you have a way to send a signal when a storm happens? Didn't need to yet !! But just in case.

BaBaLou.

[Puck]

BaBaLou: I have seen the V572RF32 cause a PLC storm on both A1 & A11. For each of these address, I have an ON and an OFF macro (might as well cover both possibilities per address) that when triggered will send an RF OFF signal to my TM751 (which is powering my V572RF32), delays 30 seconds, then send the RF ON signal. This has worked flawless for me on at least 3 occurrences since I set it up. In my macro I also have it send my cellphone an email just so I know to check the system out manually as well.

And make sure you use a status flag to keep only one occurrence of the macro running; during the V572RF32 induced PLC storm, it could get ugly if more than one reset routine gets executed simultaneously.

[BaBaLou.]

Ahh. so PLC storm=busy line then RF will be sent instead for a signal to get through. The TM751 then obviously respects the RF ON or OFF signal even during the storm? Will the need to repeat the RF command it to assure it gets to the transceiver?

[Puck]

Ahh. so PLC storm=busy line then RF will be sent instead for a signal to get through. The TM751 then obviously respects the RF ON or OFF signal even during the storm?

The TM751 does not listen to X10 commands on the power line, it only talks to it. That's probably why it's an impolite transceiver. So it will react to the RF command through the PLC storm.

Will the need to repeat the RF command it to assure it gets to the transceiver?

Don't really need to. If the macro times out and the TM751 for some reason didn't get the signal, the macro will execute again as long as the PLC storm is still present.

[BaBaLou.]

Thanks!!

[Dan Lawrence]

You may want to try the RR501 transceiver as it is more polite than the TM751.  It may work better.  I used to use a 751 to receive RF signals from a SS13 "Stick-a-Switch and the 751 would miss the signals, it was "hit or miss".   I replaced it with a RR501 and have no problems even though the SS13 is 10 feet away from the 501.

[Puck]

Dan: For the purpose of resetting the V572RF32 when it goes into a PLC storm, you wouldn't want a polite transceiver that may not execute the RF command until the power line is clear. I'm not sure the RR501 would do that, but I know the TM751 doesn't.

[Brian H]

New TM751s seem to have a much better RF receiver in them. Mine actually beats my RR501 for distance.
As a hardware type I had to look at it. Has the same Receiver Board in it as the CM15A but with the longer antenna works better than my CM15A does. Still not polite and will gladly step on anything on the power line.

[PajamaGuy]

Well - it may have been a dumb question to start, but I did get one piece of expert advice from Mr. Puck, "Use a TM751 because of its impoliteness, rather than an RR501" - I'm changing it out now!

As always - Thanks!