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What Happens If I Do This?


George Simmons

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I've never wanted/needed to do this before so I've never thought much about it. But this year I have enough channels I want to duplicate in both yards that it could work. Instead of having more channels in each sequence just for copy/pasting can I instead set the two controllers to the same unit ID number to duplicate the programming in each yard?

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Guest Don Gillespie

George Simmons wrote:

I've never wanted/needed to do this before so I've never thought much about it. But this year I have enough channels I want to duplicate in both yards that it could work. Instead of having more channels in each sequence just for copy/pasting can I instead set the two controllers to the same unit ID number to duplicate the programming in each yard?

If my memory serves me correctly there was a duscusion about this over a year ago, and as John bullard pointed out to me that yes in fact in can be done and if I remeber he said he does this with some of his controllers, how ever I am getting old and my memory isn't as good as it once was. :P
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It can be done, and some people do.

Big caution flag, though. Troubleshooting some issues becomes more difficult with the same UnitID in the daisy chain. Generally, I don't recommend it.

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Thanks guys. I figured it would be okay but I wanted someone to confirm it in case it was ME who was remembering incorrectly.

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Try this LOR Hardware - General > Multiple Networks- same controller numbers (21 replies - 627 views)

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LOR Hardware - General > Multiple Networks- same controller numbers (21 replies - 628 views)

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relax George, I have done it. However do note the caution that Don from Texas mentioned regarding troubleshooting.

You shouldn't have any problems as well as you know the hardware and software

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There is a risk that at some point, a firmware update may cause this unofficial feature to stop working. And, troubleshooting is definitely more difficult. Don't expect a hardware utility scan to reliably find the controller, let alone have any idea what type it is, or what firmware is on it.

But, I did have two controllers on the same ID mirroring each other last year. I simply needed more amps in the canopy of one tree.. I'm glad that last year was the last year of incandescent in the park trees. We had about 60A per tree all on. 3 PC series controllers per tree, each one with a dedicated 20A circuit. But the one tree front and center is somewhat larger, and wound up with more strings of C7 than the rest. Enter a 4th PC series with a 4th dedicated circuit. Worked great mirroring one of the other three.

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I do this all the time with DMX controllers in the theatre. No problems.

Hoping it works the same with LOR protocol.

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Ken Benedict wrote:

I do this all the time with DMX controllers in the theatre. No problems.

The DMX protocol is unidirectional.

The LOR protocol is often unidirectional, but can be bidirectional is some cases. Those cases are:
  1. Controller querying using the Hardware Utility;
  2. Firmware uploads;
  3. Trigger inputs.

When you click "Refresh" in the Hardware Utility, it sends a "query" message to each unit ID in sequence. If 2 controllers have the same unit ID, then they will both respond at the same time, which will result in a "collision" which will have unpredictable results, often causing that controller to not show up in the list. Thus, you won't be able to use the hardware utility to troubleshoot that set of controllers in the normal way. You can still use the "Console" screen of the Hardware Utility, because that uses unidirectional communication.

I'm not sure how the trigger inputs work, but I suspect the show player periodically polls the controllers for their input status. Obviously, having two controllers at the same ID will not work with inputs.

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George, I have done this "accidentally" and I can tell you it worked fine. I then went back and set one of the controllers to another ID. But it worked great as you describe.

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