mbam Posted February 26, 2018 Share Posted February 26, 2018 I'm having a problem adding some devices. Brand new 2477D dual band, v4.5. I'm getting "Cannot determine device link table address" error. Tried 2 different units so far. Did factory reset on both of them. Any ideas? Thanks!! Link to comment Share on other sites More sharing options...
Michel Kohanim Posted February 26, 2018 Share Posted February 26, 2018 Hi mbam, Most probably related to signal/noise. I suggest doing a factory reset first. If that does not work, move to a different location (or move the PLM to a different outlet). With kind regards, Michel Link to comment Share on other sites More sharing options...
mbam Posted February 26, 2018 Author Share Posted February 26, 2018 Ok, I'll try that. Probably not a bad idea in general as the ISY and PLM are currently on the same circuit as all my AV equipment at the far end of the house. I think I'll move it more towards the center. Thanks, I'll report back! Link to comment Share on other sites More sharing options...
stusviews Posted February 26, 2018 Share Posted February 26, 2018 You seem to have a lot of communication problems as evidenced by all the devices that show a ! I recommend taking care of that first. Any electronic device can cause a communication problem. An easy test is to unplug or disconnect possible offenders. They must be unplugged or disconnected. Just turning them off is inadequate. If doing so improves communication, then a FilterLinc should solve that problem. Also, although moving the PLM is a good idea, try to find a circuit that has little or no electronics. You can use a long extension cord to test various outlets before moving the PLM. It shouldn't matter where the ISY power supply is plugged in. Link to comment Share on other sites More sharing options...
mbam Posted February 26, 2018 Author Share Posted February 26, 2018 23 minutes ago, stusviews said: You seem to have a lot of communication problems as evidenced by all the devices that show a ! I recommend taking care of that first. Any electronic device can cause a communication problem. An easy test is to unplug or disconnect possible offenders. They must be unplugged or disconnected. Just turning them off is inadequate. If doing so improves communication, then a FilterLinc should solve that problem. Also, although moving the PLM is a good idea, try to find a circuit that has little or no electronics. You can use a long extension cord to test various outlets before moving the PLM. It shouldn't matter where the ISY power supply is plugged in. Yes, sounds like a good idea even though some of those no longer exist. I left them as most likely I will add them back. I will disable them for now. What is the max cable length I can use to connect the PLM to the ISY? I'm thinking that might be a more accurate test as apposed to a long AC cord. Link to comment Share on other sites More sharing options...
stusviews Posted February 26, 2018 Share Posted February 26, 2018 The concern involves power to the PLM, not the ISY. Filtering the audio equipment is relatively easy as is testing using a long extension cord. But, just adding a filter is useless if you cannot prove which is the offending equipment. That can be shown by simply unplugging and/or disconnecting the suspected gear. Nothing provides a more accurate test. As I mentioned, where the ISY gets power is not as much a problem as where the PLM is powered. It's recommended that you limit the Ethernet cable to less than 10', but with a very high quality Cat 6 cable, some users have had success with a 40' cable. OTOH, a long extension cable is relative easy to move around. Remember, this is only a test. If you do need to move the PLM, you may be better off using a long Ethernet cable between the router and a new Ethernet switch so you can keep the length of the cable between the ISY and PLM relatively short. Link to comment Share on other sites More sharing options...
mbam Posted February 27, 2018 Author Share Posted February 27, 2018 Ok, I ran an extension and things are much better!! Even with some of my troublesome devices. I have network all over the house, I just need to find another spot for the ISY Big thanks!! Link to comment Share on other sites More sharing options...
Techman Posted February 27, 2018 Share Posted February 27, 2018 7 hours ago, mbam said: Ok, I ran an extension and things are much better!! Even with some of my troublesome devices. I have network all over the house, I just need to find another spot for the ISY Big thanks!! Here's a link to troubleshooting ISY communication problems. It's best to isolate the PLM from UPS's, computers, and power supplies as they all can interfere with the Insteon signals https://wiki.universal-devices.com/index.php?title=INSTEON:_Troubleshooting_Communications_Errors Link to comment Share on other sites More sharing options...
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