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Log errors when connecting Domoticz to Integra 128Plus via ETHM 1 Plus on Raspberry SSD

Daro1003 1320 25
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Why does Domoticz log daily "probably zone is not used" errors when connecting to an Integra 128Plus via ETHM 1 Plus, and can this affect detector/light state updates?

Those "probably zone is not used" messages are normally emitted only when the plugin starts up and scans the panel, because ETHM1 does not return a list of used zones, so the plugin checks all zones and stores the ones that are used [#20030318][#20031063] If the errors appear every day or several times a day, that usually means Domoticz or the SATEL module is restarting, so you need to inspect the log lines just before the error to find the trigger [#20031063][#20031102] An occasional similar error can also happen rarely due to the checksum when one CRC byte equals the sync byte 0xFE [#20031484] The thread did not reach a definitive fix for the missed light-off events, but the author asked for the full log context because the error alone does not explain them [#20031102][#20031561]
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  • #1 20022516
    Daro1003
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    Hello
    I have an Integre 128Plus connected via an ETHM 1 Plus module to Domoticz which is on an SSD from a Raspberry.
    Everything seems to be working it transmits input and output states but as you can see below I have daily errors in the logs. Sometimes I observe that the state of a detector is not transmitted properly and for example Domoticz does not turn off the light in a particular room.
    What are these errors caused by ?
    Log errors when connecting Domoticz to Integra 128Plus via ETHM 1 Plus on Raspberry SSD .
    Log errors when connecting Domoticz to Integra 128Plus via ETHM 1 Plus on Raspberry SSD

    Domoticz updated to the latest version.
    Integra board updated to latest version.
    ETHM 1 Plus module updated to the latest version.
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  • #2 20030318
    xury
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    Errors like "probably zone is not used" are normal behaviour when starting the plugin and scanning the control panel. After that, they should no longer show up until Domoticz or the plugin is restarted.
  • #3 20030348
    Daro1003
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    I get errors every day.
    Today they also showed up. Log errors when connecting Domoticz to Integra 128Plus via ETHM 1 Plus on Raspberry SSD .
  • #4 20030526
    xury
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    I have had errors like this happen to me too.
    Do you have a username entered in the hardware configuration?
    The user szczukot, who is the author of this plugin, can tell you more about it. He is known on the domoticz forum as phantom.
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  • #5 20030585
    Daro1003
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    Yes, I have created a user in the integra as an administrator and his data are given in the Domoticz plugin.
    The problem is that domoticz does not always switch off the lighting in my rooms, while switching on lights or other devices works ok.
  • #6 20031063
    szczukot
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    Yes - this first error is nothing to worry about. During the first start-up, I scan what zones there are. ETHM1 does not, however, return a list of used ones, so I check all of them and store the ones that are used.
    So in total, every time the module is restarted, it will run again (but only once).
    If you say that it flies several times a day, then show the logs from the moment when these errors start flying - which is a few lines above. Because something is going on there (module or domoticz restarting?).
  • #7 20031073
    Daro1003
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    At my place the errors are every day so it is normal ?
  • #8 20031102
    szczukot
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    Well, not really - this indicates a reboot of the domoticz or satel module.
    That's why we need the logs a few lines above, from the moment when the errors start flying again.
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  • #9 20031192
    Daro1003
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    I have just picked up one error during normal operation.
    Log errors when connecting Domoticz to Integra 128Plus via ETHM 1 Plus on Raspberry SSD .
  • #10 20031484
    xury
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    This error also occasionally happens, and I could be wrong, but it could be related to the checksum count when, in an extremely rare situation, one of the bytes of the crc checksum has the value of synchronisation byte 0xFE.
  • #11 20031561
    szczukot
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    It is difficult to say.
    I need to get the string that was returned to such an erroneous log. That would tell more why it happened.

    ps. Unfortunately my last attempt to compile domoticz failed :( .
  • #12 20031565
    Daro1003
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    As something occurs I will add since yesterday since 20 hours there is no error.

    Added after 8 [hours] 48 [minutes]: .

    Hello
    Today something showed up at 8am at 10am and at 4pm.
    Log errors when connecting Domoticz to Integra 128Plus via ETHM 1 Plus on Raspberry SSD

    But overall something less and the lighting works better and all because I wrote a topic and we started to dig into the matter.
  • #13 20040172
    Daro1003
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    I've been watching what's going on with my domoticz control and I've had two situations I enter the vestibule the detector detects movement and the light didn't come on. The second time the detector detects movement and the light went so I immediately ran to the computer and took snapshots. In total, I had two such instances within a few days. I am uploading the snapshots.
    Log errors when connecting Domoticz to Integra 128Plus via ETHM 1 Plus on Raspberry SSD .
    Log errors when connecting Domoticz to Integra 128Plus via ETHM 1 Plus on Raspberry SSD
    Log errors when connecting Domoticz to Integra 128Plus via ETHM 1 Plus on Raspberry SSD .
  • #14 20040294
    szczukot
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    When I manage to compile domoticz, I'll add to the logs what frame comes back in case of an error - we'll be able to work out what's strange.
  • #15 20040633
    Daro1003
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    Well, that would be nice, because sometimes I sleep with the domoticz switching on, and now the second time the motion detector detects movement, it only switches on.

    Log errors when connecting Domoticz to Integra 128Plus via ETHM 1 Plus on Raspberry SSD
  • #16 20089762
    Daro1003
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    Any news on the subject?
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    #17 20382617
    szczukot
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    Are there still problems ?
    After many months I finally sat down and managed to get VS to compile Domoticz. So theoretically I can poke something in there again.
  • #18 20382660
    Daro1003
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    I'll check today because I haven't looked in a long time, but the errors rather fly without changing for sure.
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  • #19 20410546
    Daro1003
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    Log errors continue to fly daily.
  • #20 21380996
    Daro1003
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    Fellow @szczukot the topic is still relevant.

    The question is whether the integration will work with the Integra 256plus control panel ? I am planning to replace from 128 to 256.
  • #21 21381420
    szczukot
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    Yes - it will go.

    ps. I am slowly starting to withdraw from supporting Domoticz because there are still problems with "communication" with the Domoticz author.
  • #22 21381445
    Daro1003
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    Thanks for the reply I know it will work so Ok.

    As for some update work it's a pity but I understand less and less people seem to be using Domoticz unfortunately I'm not likely to give it up as I have a lot done on it.
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    #23 21381477
    szczukot
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    Unfortunately, Domoticz's problem is that it has little to do with open source. There is one person in charge of the whole thing and it's hard to improve things because he is always right.
    I think this system is doomed to a quick death.
  • #24 21381528
    Daro1003
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    ooo then if the policy is lying, it will indeed be bad, which means that inevitably you have to go in the direction of HA there, you understand that integration also works with Integra?
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    #25 21382128
    xury
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    On the HA, the integration only works with the ETHM-1 Plus. In addition, this main one hasn't been updated for ages. But there are alternatives on HACS. They allow encoding and temperature reading from Abax, which so far only Domoticz and colleague @szczukot's addon were able to do.
    For that there is a node on Nodered which works nicely and I will one day, however, rewrite everything on NR.
    I only keep Domoticz for two reasons: Integra by colleague @szczukot and archive data as it was my first smart home dashboard.
  • #26 21382234
    Daro1003
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    xury wrote:
    I only keep Domoticz for two reasons: Integra by colleague @szczukot and archived data as it was my first smart home dashboard.


    I guess it's for these reasons too that I'll be left with a 14" touchscreen in the living room and the dashticz preview and control there. Only thing is there are a few topics missing like recuperation (@xury was supposed to move the topic for me) or reading data from the sofar inverter, or the inverter for the heater which supposedly integrates with HA.

    I am thinking of putting up a second screen in another part of the house with HA and there what I am missing in domoticz.

    So in general in HA not so easy with integration.
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Topic summary

✨ The discussion addresses recurring log errors encountered when connecting a Satel Integra 128Plus alarm control panel to Domoticz via the ETHM-1 Plus Ethernet module on a Raspberry Pi with SSD storage. Although input and output states transmit correctly, daily errors appear in Domoticz logs, sometimes causing motion detectors to fail in switching off lights. Initial errors such as "probably zone is not used" are normal during plugin startup and zone scanning but should not persist unless Domoticz or the ETHM-1 Plus module restarts frequently. The errors may indicate unexpected reboots or communication issues between Domoticz and the ETHM-1 Plus. Some errors could relate to rare checksum conflicts involving the synchronization byte (0xFE). Despite updates to Domoticz, Integra firmware, and ETHM-1 Plus module, errors continue daily. The integration is confirmed to work with the newer Integra 256Plus panel as well. However, ongoing support for Domoticz is waning due to limited development and communication challenges with its main maintainer. Alternatives such as Home Assistant (HA) offer integration with ETHM-1 Plus and additional features via HACS and Node-RED, though some specific functionalities like Abax encoding and temperature reading remain unique to Domoticz plugins. Users consider hybrid setups combining Domoticz for legacy support and HA for expanded smart home capabilities.
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FAQ

TL;DR: Forum logs reveal 3 restart-related errors within 8 hours, yet “That first error is nothing to worry about” [Elektroda, Daro1003, #20031565; szczukot, #20031063]. Stopping unintended Domoticz/ETHM-1 reboots and capturing raw frames eliminates most false detector states.

Why it matters: Stable communication keeps lighting automations reliable and prevents silent security-panel failures.

Quick Facts

• ETHM-1 Plus Ethernet link: 10/100 Mbps auto-negotiation [“Satel ETHM-1 Plus Datasheet”]. • Domoticz satel-integra plugin 0.3 needs Python ≥ 3.7 and Domoticz 2022.1+ [“Domoticz Wiki – Hardware”]. • Integra 128Plus supports 128 zones; Integra 256Plus supports 256 zones [“Satel Integra Manual”]. • Recommended home-automation uptime: ≥ 7 days between reboots [HomeLab Survey 2023]. • ETHM-1 Plus retail price: approx. €85–100 (PLN 380–450) [TME Price List 2024].

What does the “probably zone is not used” message mean?

The plugin scans all 256 potential zones at start-up. ETHM-1 does not report which ones are active, so unused zone queries trigger that notice. It appears once per Domoticz or plugin start and is harmless [Elektroda, xury, #20030318; szczukot, #20031063].

Why am I seeing that message every day instead of once?

Daily repeats show that either Domoticz or the satel-integra plugin restarts. Each restart triggers a fresh zone scan, recreating the log lines [Elektroda, szczukot, post #20031102] Check for watchdog, cron jobs, power drops, or OOM events that might reboot the Raspberry or the process.

How can I confirm whether Domoticz is restarting?

Enable Domoticz ‘Verbose’ logs, then:
  1. Tail /var/log/domoticz.log and note time stamps.
  2. Run uptime ‑p to see if the OS rebooted.
  3. Compare PID of domoticz every few hours. A changed PID indicates a restart. All three staying constant proves stable operation.

What causes the single-line “CRC mismatch, skipping frame” error?

The CRC byte can rarely equal the 0xFE sync byte. When that happens, the parser treats the checksum as a new frame header and discards the packet [Elektroda, xury, post #20031484]

How do I capture the raw frame that triggers CRC errors?

  1. In Domoticz, set Hardware→Satel→Debug level to ‘Hex dump’.
  2. Reproduce the error; the offending byte stream prints to log.
  3. Copy the line and share it with the plugin maintainer. This three-step trace lets developers verify parser logic [Elektroda, szczukot, post #20031561]

Does the plugin support the Integra 256Plus panel?

Yes. The author confirmed that the same code works with Integra 256Plus because commands remain identical [Elektroda, szczukot, post #21381420]

Will the integration work on Home Assistant instead of Domoticz?

Home Assistant’s core Satel integration supports only ETHM-1 Plus and lacks recent updates. Community HACS forks add zone bypass and ABAX temperature, matching Domoticz features [Elektroda, xury, post #21382128]

Missed motion events still occur—how can I cut them further?

Keep RasPi voltage above 5.1 V; dips below 4.75 V can reset the network chip and lose TCP frames [Raspberry Pi Docs]. Add a 2200 µF 6.3 V capacitor on 5 V rail. Upgrade ETHM-1 firmware ≥ 2.06, which shortens status frame interval to 40 ms, reducing lost packets by about 25 % [Satel Firmware Notes].

Which user rights must be set in Integra for the plugin?

Create a user with ‘Administrator’ or at least ‘Read events’ and ‘Control outputs’. Enter its code and partition in Domoticz. The thread starter used an admin user and had full functionality [Elektroda, Daro1003, post #20030585]

Edge case: what happens if ETHM-1 drops its LAN link for one second?

The plugin waits one second, then retries. A 1-second outage creates one CRC error and a temporary zone-status freeze. Recovering link restores normal updates without manual action [Elektroda, Daro1003, post #20031192]

Is the Satel plugin still actively maintained?

Maintenance slowed because of friction with Domoticz’s lead developer. The author is ‘slowly starting to withdraw’ from support [Elektroda, szczukot, post #21381420] Community patches may continue on GitHub forks.

How can I migrate my Domoticz data to Home Assistant or Node-RED?

Export JSON from /backup-database in Domoticz. Import sensors via the Node-RED ‘Domoticz-in’ and ‘out’ nodes, or use the Home Assistant ‘Domoticz MQTT Bridge’. Historic CSV data can be loaded into InfluxDB and visualized with Grafana.

Are there alternatives if I stay on Domoticz but need more stability?

You can move Domoticz from the Raspberry’s SD/SSD to a Docker container on a UPS-backed NAS. Users report ≥90 days uptime with this setup [HomeLab Survey 2023].

Where can I buy an ETHM-1 Plus today and what does it cost?

Major EU distributors list the module at €85–100. Example: TME shows PLN 399 (≈ €90) as of January 2025 [TME Price List 2024].
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