Brian H

The communications between the PLM and the ISY994i is RS232 not TTL. http://forum.universal-devices.com/topic/17707-isy994i-to-plm-serial-port-ttl-or-rs232/

Larry. The IM {Insteon Modem aka PLM} does not use Xon/Xoff or any other control characters. Command echoing. Is used between the ISY Interface and the PLM serial port. Developers guide explains how it it supposed to work. I can see problems if each part of the serial exchange does not wait for the proper message echoed back. http://cache.insteon.com/developer/2413dev-042007-en.pdf

Has to be a 2413S. As the communications between the ISY994i controller and the PLM is serial. The 2413U is a USB type. You may want to see if a Restore PLM will temporarily fix things. I agree 28 links is way too small.

In the diagnostics tests. How many links are in the PLM? Very few or none is a sign the PLM is going bad. Is the LED on the PLM on at about a normal level? I would suspect a v1.3 1329 maybe starting to fail.

If the module is Off the LED is Red. In the Beacon test if the module you are looking at is flashing Green it is on the opposite phase. Periodically the module doing the Beacon Test pauses and restarts. The module you are looking at momentarily goes Red as it was Off before the test was started. Then flashes Green again when the test starts again. Another possibility is the Insteon RF signal to the module you are looking at during the test is marginal. The led may act that way. I have a 2443 Access Point that the led stops flashing if I stand in front of it. When the test is run from the Access Point in the other end of the house.

It should. The Range Extender they sell. Is a 2457D2 PCB with out the dimmer components. In a case with no external output access. Some here say get a 2457D2 even if you only need Range Extending. Make sense as if you ever need an extra 2457D2 you have it and the Range Extender can't do any load control.

It may work but dimming a LED not made to be dimmed. Will shorten its life and maybe do damage to the dimmer itself.

From your tests. It does appear it has failed. 6-8 weeks is an unbelievably short time for a new unit to just fail. 2.1 was supposed to be the fixed power supply version. Oh well! I don't have much faith in Smartlabs's or Smarthome's Engineers and QC department to get things right anymore. I bought a few 2635-222R refurbished On/Off modules. They claim that they are tested 100%. One had no screws in the PCB and it was floating loose in the case. Another one the Green part of the LED does not work. Only the Red and unused Blue parts worked.

You did unplug the PLM and power down the ISY Interface. Then plug in the PLM and wait for it to totally initialize. Then power up the ISY Interface. The ISY Interface only checks for a PLM at boot up or reboot.

The present manual was published 09/18/2015. The manual I linked you to on the Smarthome Forums. Was an earlier one that was for modules before the flow chart was in its firmware. Yours didn't have the flow chart in its firmware. As far as I could tell from your symptoms. Neither do mine have the flow chart in their firmware. So they will never go into the second slow flashing green state. If you have a moment. Maybe you can post the firmware version reported in the Administrative Console. The data on the white sticker on the back would also allow others to maybe chime in with their versions findings.

Unfortunately some Insteon modules get out of production with test links in them. So factory resetting all new modules is done by many of us routinely. I am still trying to figure out. How you got a brand new 2457D2 Lamplinc that did not follow the flow chart.

I also saw a post that they did reverse their position.

Phillips recently changed the ability of third party devices working with HUE. Not sure if this will impact what is being done by the members here. http://www.extremetech.com/electronics/219450-philips-updates-hue-introduces-lightbulb-drm

I have recently seen reports of the modified sine wave UPS units. Causing big issues with the newer computers with Active Power Factor Correction power supplies. Like instantly shutting down when going into battery backup on a power loss.

If the 200mA supply was close to its rating. There is a possibility it momentarily dropped out as the UPS switched to battery. The UPS may have a stepped modified sine wave output also. That could have played into the observations you had.

Over the last few weeks. I have received a few exclusive for email registered customer sales offers. Yesterday my luck was not too good. Ordered a few of the refurbished On/Off module at $39.99 and the Alert Module. Last night I found a limited time 20% off email for two or more of the new On Off Modules. 20% off the 49.99 new price is $39.992 rounded down to $39.99. Of course the order was processed and on its way. When I read the email offer. Refurbished don't have the I am not happy 30 day return privilege. Just a 30 day DOA exchange warranty.

I suspect the old 300mA minimum current specification. Is low for a ISY994i. Especially if it has any added hardware. Like the Z-Wave board. My ISY994i and the one sold by Smarthome as an option when using a 2413S. Is 100-240 VAC 50/60 Cycles Input. 5 Volts 1 Amp output.

Maybe someday Smartlabs will release the Insteon Firmware UDI needs to make their own PLM. As I understand that is the hold up right now.

I don't believe a KPL dimmer can be used to replace a KPL relay. Using the replace with choice. One is an On Off device the other one dims. The replacement has to be close enough hardware wise for the replace with to show. I was going to use one of the new 2635-222 On Off modules in place of an old 2456S3 ApplianceLinc. The replace option was not available. As the new one was not close enough feature wise.

I didn't have any of the 2476ST models but do remember them also being reported as having no Air Gap switches. As do my early 2476S and I believe also the old Icon models.

If you had any of the old hardware 2476S Switchlincs. They do not have the Air Gap Switch. Pulling out the set button will just break it off. They also have a completely different Factory Reset procedure. Later hardware revision 2476S module did have the Air Gap Switch.

The instruction on the support page will not show the older magnetic switch with both the Red and Green {NC or NO}. The present kit does not have the same switch in it. I looked myself for the older manual, for a friend and did not find it.

Battery devices are in a power saving mode. A query will not work. This new feature waits until the device wakes up. Like detecting a motion or door opens. Then while it is awake. Starts to write to it. If memory serves me many of them have a way for the program to keep it awake until turned back to power saving.

Thank you for the information.

Wouldn't the 2843-222 Open Closed Sensor or 2854-222 Hidden Door sensor also wake up if you open the door?