AndrewB Posted November 17, 2014 Share Posted November 17, 2014 We have set up 2 groups of 6 CCR arches on two AUX networks (E & F). CCR Controller Channel IDs 41-46 on each network. The 6 arches work as expected on both AUX networks. When we attempt to daisy chain a duplicate of these channels down the line, the first set stop working correctly. They will lock up in place or stay lit in spots, and some on the second set work sporadically. This works fine:PC > AUX E > E41 > E42 > E43 > E44 > E45 > E46PC > AUX F > F41 > F42 > F43 > F44 > F45 > F46 When we attempt to add another set of duplicate channels down the line, there's problems:PC > AUX E > E41 > E42 > E43 > E44 > E45 > E46 > E41 > E42 > E43 > E44 > E45 > E46PC > AUX F > F41 > F42 > F43 > F44 > F45 > F46 > F41 > F42 > F43 > F44 > F45 > F46 The Cat5e from the PC to the first controllers on E & F is about 1000 feet, but without the duplicate channels, it is working fine. We have a mega tree that is connected to the controller PC that is duplicating channels for front and back and is working fine. The tree is even further away from the controller PC. Any suggestions? Thanks in advance. Link to comment Share on other sites More sharing options...
George Simmons Posted November 17, 2014 Share Posted November 17, 2014 You didn't mention what speeds your networks run. Anything less than 500K and it looks like you've got way too many channels on each network. Link to comment Share on other sites More sharing options...
k6ccc Posted November 17, 2014 Share Posted November 17, 2014 Especially since you running quite long RS-485 cables, do you have a termination at the last controller? Link to comment Share on other sites More sharing options...
AndrewB Posted November 17, 2014 Author Share Posted November 17, 2014 You didn't mention what speeds your networks run. Anything less than 500K and it looks like you've got way too many channels on each network.These are running on 500K with the new, red, USB adapters. Link to comment Share on other sites More sharing options...
AndrewB Posted November 17, 2014 Author Share Posted November 17, 2014 (edited) Especially since you running quite long RS-485 cables, do you have a termination at the last controller?No, the connections just run to the last controller. Is this something that LOR sells? EDIT: Is something like this what you're referring to? http://www.icpdas-usa.com/sg_785.html?gclid=Cj0KEQiA1qajBRC_6MO49cqDxbYBEiQAiCl5_FoGI0uf5x6kdamjAYlEiH2_zEKHf-GZwClSISoeC9oaApzE8P8HAQ Edited November 17, 2014 by AndrewB Link to comment Share on other sites More sharing options...
k6ccc Posted November 17, 2014 Share Posted November 17, 2014 No. It's just a 120 ohm resistor at the end of the string. Normally plugged into the 2nd RJ-45 port on the last controller. See this thread http://forums.lightorama.com/index.php?/topic/8769-some-channels-come-on-and-stay-on/#entry73202Read post #5 for detailed instructions with photos in post #7 1 Link to comment Share on other sites More sharing options...
AndrewB Posted November 17, 2014 Author Share Posted November 17, 2014 No. It's just a 120 ohm resistor at the end of the string. Normally plugged into the 2nd RJ-45 port on the last controller. See this thread http://forums.lightorama.com/index.php?/topic/8769-some-channels-come-on-and-stay-on/#entry73202Read post #5 for detailed instructions with photos in post #7Excellent, I'm on my way to Radio Shack now. Thanks! I'll report back how this worked. Link to comment Share on other sites More sharing options...
AndrewB Posted November 18, 2014 Author Share Posted November 18, 2014 Excellent, I'm on my way to Radio Shack now. Thanks! I'll report back how this worked.Insta-fix. Plugged one each into the end of the run on both AUX E & F and all arches are now working perfectly. Thank you very much! Would have been a couple $ fix If I didn't have to buy a variety pack of resistors as my local RS store did not carry 1/8W 120 Ohm resistors individually. Still, under $15 total. Link to comment Share on other sites More sharing options...
k6ccc Posted November 18, 2014 Share Posted November 18, 2014 Well hot damn! Glad that worked. The tip off was your long cable runs, and the problem showed up with even longer runs. The spec for RS-485 is to be terminated, but we generally get away without the terminations in part because most of us are not running really long cable runs, and at not all that fast of a data speed. You are running long cable runs and at a higher speed, and it was just too much. With the terminations, it sounds like the data is happy! Link to comment Share on other sites More sharing options...
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