- This topic has 1 reply, 1 voice, and was last updated February 8, 2025 at 12:40 pm by Ian Papp.
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Good day all,
It appears I have lost my ELK-M1DBHR. But first, some background. I had powered down the main panel and the two remote panels (M1XN’s and P212S modules reside in these remote panels) before installing an additional M1XN module. It was wired in series between the P212S and existing M1XN, address set correctly, and shorting block installed correctly as it is NOT the last device on that buss. Before power up, I took a reading across DATA A and DATA B at the main panel with a reading of 70 ohms. Being in the 10+/- ohm window, I powered up the remote panels, and then the main panel. At that point every device that communicates on the RS-485 Data Bus show it was “unenrolled” from my main panel. The main panel could not find these devices either.
Wiring each Data Buss, only one at a time, to the ELKM1 directly without the M1DBHR shows all of those devices with good comms. Here is the device arrangement of my Data Buss. Device address in brackets.
BRANCH 1 – P212S(5) –> M1XIN(2) –> M1KPNAV(1) –> Shorting Block on Keypad
BRANCH 2 – P212S(6)–> **NEW MODULE M1XIN(4)**–> M1XN(3)–> M1KPNAV(3) –> Shorting Block on Keypad
BRANCH 3 – M1KPAS –> Shorting Block on Keypad
BRANCH 4- M1KPNAV(2) –> Shorting Block on Keypad.
All shorting blocks are installed per the manual on the Data Hub with one installed per branch on the board and at the device at the end of each run.
12VDC is steady at all devices.
So, I suspect I have lost my M1DBHR but am not sure why. Additionally, the new M1XN status light has an irregular flash rate. It sometimes matches one of the listed flash counts, but it is not a steady ON-OFF and more of a strobe and is also often inconsistent. Is it possible this module, which was new in the box, is bad? If so did it damage my DBHR? Is there a means of testing the M1DBHR or M1XINor any tests I can perform on the M1DBHR to confirm it too is bad beyond my process of elimination?
Looking for some help here with kind of an odd problem. Thank you!
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