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  • Mango is installed to monitor meters with Modbus serial connection. It is running on the Linux platform. Mango generates a lot of messages as follows.

    7568 04:52:19
    'Modbus_/dev/ttyUSB0': Exception from modbus master: Function code: 0x14 04:52:47 - Returned to normal
    7567 00:18:17
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@14d9723 00:18:47 - Returned to normal
    7566 00:03:17
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@1dfe402 00:04:17 - Returned to normal
    7565 00:01:17
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@104d667 00:01:47 - Returned to normal
    7564 Jul 29 23:59
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@1da0d5b Jul 29 23:59 - Returned to normal
    7563 Jul 29 23:53
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@1fc3519 Jul 29 23:54 - Returned to normal
    7562 Jul 29 23:47
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@dbdcef Jul 29 23:47 - Returned to normal
    7561 Jul 29 23:29
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@d10aa Jul 29 23:31 - Returned to normal
    7560 Jul 29 23:23
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@410205 Jul 29 23:25 - Returned to normal
    7559 Jul 29 23:20
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@17e1207 Jul 29 23:21 - Returned to normal
    7558 Jul 29 23:19
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@153be14 Jul 29 23:20 - Returned to normal
    7557 Jul 29 23:18
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@a0c65c Jul 29 23:18 - Returned to normal
    7556 Jul 29 23:16
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@1a9e065 Jul 29 23:17 - Returned to normal
    7555 Jul 29 23:12
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@c5ac6d Jul 29 23:12 - Returned to normal
    7554 Jul 29 23:11
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@d0c8a Jul 29 23:11 - Returned to normal
    7553 Jul 29 23:08
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@86d793 Jul 29 23:09 - Returned to normal
    7552 Jul 29 23:07
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@1609b2f Jul 29 23:07 - Returned to normal
    7551 Jul 29 23:04
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@1ae74dc Jul 29 23:05 - Returned to normal
    7550 Jul 29 23:02
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@1a0b09d Jul 29 23:03 - Returned to normal
    7549 Jul 29 22:54
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@1ecfbed Jul 29 22:55 - Returned to normal
    7548 Jul 29 22:48
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@18322a4 Jul 29 22:50 - Returned to normal
    7547 Jul 29 22:42
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@12e3fa3 Jul 29 22:43 - Returned to normal
    7546 Jul 29 22:39
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@457317 Jul 29 22:41 - Returned to normal
    7545 Jul 29 22:33
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@186ef65 Jul 29 22:35 - Returned to normal
    7544 Jul 29 22:29
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@1d681e Jul 29 22:29 - Returned to normal
    7543 Jul 29 22:26
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@17adcd4 Jul 29 22:27 - Returned to normal
    7542 Jul 29 22:22
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@135650e Jul 29 22:24 - Returned to normal
    7541 Jul 29 22:02
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@10d517c Jul 29 22:02 - Returned to normal
    7540 Jul 29 17:23
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@1b0fd23 Jul 29 17:23 - Returned to normal
    7539 Jul 29 17:02
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@1dce9f Jul 29 17:02 - Returned to normal
    7538 Jul 29 16:58
    'Modbus_/dev/ttyUSB0': com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@bfefae Jul 29 16:58 - Returned to normal

    Could you inform how to stop it or resolve this problem.

    Thanks in advance !


  • What is your update period and time out settings. Have you tried setting your timeout higher?

    Joel.


  • The update period is set to 30 seconds.
    when try to change it and get the message in the attachment.

    Where it says Port- there’s nothing in the drop down and it is a required value.
    Timeout is set to 2000 and there is 1 retry.

    Attachment: download link


  • Yes, port is where you have your rs-485 converter installed. You also need to install the RXTX files as discribed on the download page. Is this windows or linux? I see it looks like you've put the port path in the name field so I'm assuming this is Linux.


  • Note that sometimes when your data source is running the port that it is using will not be displayed in the drop down. You can try disabling the data source and refreshing the page to see if the port shows up.

    Other than that, it looks like your timeout needs to be longer. You can also try upgrading to a more recent version that has I/O logging to log the comm traffic for later analysis. Later versions also have better tools for testing your settings; this will help you determine what timeout value you should use.


  • I tried to export the "point hierarchy" and import right away. The port show up again. When the interval is extended to 3 minutes, number of the alert messages becomes less.