MBUS invalid data errors on new EMONCMS install

emonHub
1

Hi Guys,

I’ve just setup a new emoncms instance on a RPI to log data from my MBUS adapter and am getting errors about invalid MBUS data in the logs. It was built from the latest SD card image plus latest updates. Both are running 11.6.4 low-write version.

Config is as below and is copied from my original emoncms instance where it is working fine.

If I switch the MBUS USB adapter back to the original emoncms RPI it works fine again.

Any ideas what I’m missing?

Thank you.

[[MBUS]]
    Type = EmonHubMBUSInterfacer
    [[[init_settings]]]
        device = /dev/ttyUSB0
        baud = 2400
    [[[runtimesettings]]]
        pubchannels = ToEmonCMS,
        read_interval = 10
        validate_checksum = False
        nodename = MBUS
        [[[[meters]]]]
            [[[[[heatmeter]]]]]
                address = 28
                type = kamstrup403

From the logs;

2024-09-05 14:58:00,640 ERROR    MBUS       read_data_frame could not read from serial port
2024-09-05 14:58:00,640 DEBUG    MBUS       Invalid MBUS data received 0 bytes 0.5 ms, count: 8
2024-09-05 14:58:00,841 DEBUG    MBUS       Decoded MBUS data: None
2024-09-05 14:58:10,050 DEBUG    MBUS       Connecting to MBUS serial: /dev/ttyUSB0 2400
2024-09-05 14:58:12,078 DEBUG    MBUS       Invalid MBUS data received 176 bytes 2022.8 ms, count: 9
2024-09-05 14:58:12,379 ERROR    MBUS       read_data_frame could not read from serial port
2024-09-05 14:58:12,380 DEBUG    MBUS       Invalid MBUS data received 2 bytes 101.7 ms, count: 10
2024-09-05 14:58:12,381 DEBUG    MBUS       Invalid count = 10. Restarting MBUS serial connection on next read
2024-09-05 14:58:12,581 DEBUG    MBUS       Decoded MBUS data: None
2024-09-05 14:58:20,089 DEBUG    MBUS       Connecting to MBUS serial: /dev/ttyUSB0 2400
2024-09-05 14:58:22,100 DEBUG    MBUS       Invalid MBUS data received 198 bytes 2008.7 ms, count: 1
2024-09-05 14:58:24,324 DEBUG    MBUS       Invalid MBUS data received 180 bytes 2023.2 ms, count: 2
2024-09-05 14:58:24,525 DEBUG    MBUS       Decoded MBUS data: None
2024-09-05 14:58:32,041 DEBUG    MBUS       Invalid MBUS data received 178 bytes 2010.0 ms, count: 3
2024-09-05 14:58:34,253 DEBUG    MBUS       Invalid MBUS data received 175 bytes 2011.1 ms, count: 4
2024-09-05 14:58:34,454 DEBUG    MBUS       Decoded MBUS data: None
2024-09-05 14:58:42,071 DEBUG    MBUS       Invalid MBUS data received 176 bytes 2009.9 ms, count: 5
2024-09-05 14:58:44,282 DEBUG    MBUS       Invalid MBUS data received 178 bytes 2010.2 ms, count: 6
2024-09-05 14:58:44,482 DEBUG    MBUS       Decoded MBUS data: None
2024-09-05 14:58:50,397 ERROR    MBUS       read_data_frame could not read from serial port
2024-09-05 14:58:50,398 DEBUG    MBUS       Invalid MBUS data received 51 bytes 307.3 ms, count: 7
2024-09-05 14:58:50,599 ERROR    MBUS       Could not write to MBUS serial port
2024-09-05 14:58:50,600 ERROR    MBUS       read_data_frame could not read from serial port
2024-09-05 14:58:50,600 DEBUG    MBUS       Invalid MBUS data received 0 bytes 0.7 ms, count: 8
2024-09-05 14:58:50,801 DEBUG    MBUS       Decoded MBUS data: None
2024-09-05 14:59:00,010 DEBUG    MBUS       Connecting to MBUS serial: /dev/ttyUSB0 2400
2024-09-05 14:59:02,039 DEBUG    MBUS       Invalid MBUS data received 180 bytes 2022.7 ms, count: 9
2024-09-05 14:59:02,648 ERROR    MBUS       read_data_frame could not read from serial port
2024-09-05 14:59:02,649 DEBUG    MBUS       Invalid MBUS data received 56 bytes 409.4 ms, count: 10
2024-09-05 14:59:02,650 DEBUG    MBUS       Invalid count = 10. Restarting MBUS serial connection on next read
2024-09-05 14:59:02,850 DEBUG    MBUS       Decoded MBUS data: None
2

Answered my own question…

This default configuration interface entry was conflicting with my entry for the MBUS interface. I’ve commented out and the MBUS inputs are now reporting as expected.

    [[USB0]]
        Type = EmonHubOEMInterfacer
        [[[init_settings]]]
            com_port = /dev/ttyUSB0
            com_baud = 115200
        [[[runtimesettings]]]
            pubchannels = ToEmonCMS,
            subchannels = ToRFM12,
            nodename = emonTx4
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