I cannot connect to any devices from the isy. The PLM light is green but the network cable from the PLM to the ISY is not showing any lights. How can I tell if it is a bad PLM  

 

If you have a light on the PLM, but nothing on the ISY, perhaps the power supply to the ISY is gone.  Or are you saying your router light is out going to the ISY from your router.  Try changing the ethernet cable first.  Cheap fix!

I will try the cable. I can control stuff through the network module. There are lights on the isy. The network cable going from the isy to the router shows 2 green lights but the network cable going to the PLM does not have the green lights. Should there be lights on it. 

Edited January 29, 20196 yr by hum099

Tried a new cable. No luck. How do I know if it’s the PLM or the Isy. 

From within the Administrative Console, what does it say when you choose "Tools>Diagnostics>PLM Info/Status"?

If you go into the  Tools, Diagnostics , PLM Info/Status. What does it say? Should show the six digit ID of the PLM and connected.

See how many links are in the PLM with the Show PLM Link Table choice.

Try powering down the PLM and ISY994i. Then power back up the PLM and let it initialize. Then the ISY994i so it can find the PLM at stratus.

Normally the only light on the front is the power On LED and the RX and TX LEDs will flash when the ISY994i is sending and receiving messages through the PLM.

The status of PLM shows 6 digit code and connected. PLM links table is empty. Trying restarting both.. keep getting communication errors with each device. As for the lights, I was referring to the back where the network cabales attach. Only the one connected to the router light up.

Edited January 29, 20196 yr by hum099

Just to be sure, after you clicked "Show PLM Links Table", did you click the "Start" button?  An empty PLM Links Table would certainly point to an issue with the PLM.  The links in that table is how the PLM communicates with all devices.

Edited January 30, 20196 yr by kclenden

I did not click on start just opened. Should I have clicked the start.  can I restore the links.

 

Edited January 30, 20196 yr by hum099

Once you open the "Show PLM Links Table" dialog box, you do have to click "Start" to see the links.

If the links in the PLM Links Table are corrupt or missing, you can restore them with a copy of what the ISY thinks should be in the table by using "File>Restore Modem (PLM)".  Before executing a "Restore Modem (PLM)", I would do a full ISY Backup first.

Edited January 30, 20196 yr by kclenden

An empty Link Table is one of the signs of a failing PLM. Try the restore as mentioned. If it works for a short time and then looses the links again. The PLM is on its way out. Two years and a few months of use is a typical time before starting to go bad.

There is a very long thread here on the subject and how some of us have rebuilt ours. https://forum.universal-devices.com/topic/13866-repair-of-2413s-plm-when-the-power-supply-fails/

Edited January 30, 20196 yr by Brian H
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I will try restoring when I get home from work. It is definitely over 2 years old. If I need another it will be my third one. Thanks for the help kclenden and Brian H

 

Edited January 30, 20196 yr by hum099

Restore did not help. Replaced PLM and restored again and everything is working as it should. Thanks for the help.

Edited February 2, 20196 yr by hum099