Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. Timeout error in QModbusDevice::sendReadRequest on 2nd+ read in QT5.9.2
Forum Updated to NodeBB v4.3 + New Features

Timeout error in QModbusDevice::sendReadRequest on 2nd+ read in QT5.9.2

Scheduled Pinned Locked Moved Unsolved General and Desktop
2 Posts 2 Posters 899 Views
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • H Offline
    H Offline
    Henni
    wrote on last edited by
    #1

    Hi all,
    I'm new in this forum. I'm quiet sure I found a bug in QModbusDevice::sendReadRequest in QT5.9.2 on Windows ( windows7 32bit ) and MinGW. I want to make a bugreport, but I've no idea which project, component or topic this belongs. So can anyone assist me.

    My program worked fine on QT5.8.0 on Windows32 and MinGW with an internal RS485 as well as on a USB-RS485. When moving to a new computer with QT5.9.2 the program only read once then only reported timeout-error on following reads. Closing the program an rerun let it read one time again.

    Installing QT5.8.0 on that computer solved the problem.

    Anyone else encountered this problem?
    Thanks. Henni

    1 Reply Last reply
    0
    • aha_1980A Offline
      aha_1980A Offline
      aha_1980
      Lifetime Qt Champion
      wrote on last edited by aha_1980
      #2

      Hi @Henni,

      From your description it looks like this one: https://bugreports.qt.io/browse/QTBUG-53767

      Otherwise you can create a new report and use "MOD bus" for the Component.

      Qt has to stay free or it will die.

      1 Reply Last reply
      1

      • Login

      • Login or register to search.
      • First post
        Last post
      0
      • Categories
      • Recent
      • Tags
      • Popular
      • Users
      • Groups
      • Search
      • Get Qt Extensions
      • Unsolved