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Do Modbus Slave devices respond to broadcast address 0?

Jani Jani

In Modbus RTU, if master sends broadcast message to slaves, will slaves devices
respond to the master with information?

Parents
  • 0 in reply to Minty .

    I know there will be massive bus contention if all slave devices replied to a broadcast request over the same line at the same time.
    I was going to think about a solution to this bus contention issue but I don't need to do
    that because now I know there is no response to broadcast.

    Somehow I need to inform PC application what slaves are on the modbus RTU network so PC
    application can assign modbus address to slave devices.

    Any ideas?

Reply
  • 0 in reply to Minty .

    I know there will be massive bus contention if all slave devices replied to a broadcast request over the same line at the same time.
    I was going to think about a solution to this bus contention issue but I don't need to do
    that because now I know there is no response to broadcast.

    Somehow I need to inform PC application what slaves are on the modbus RTU network so PC
    application can assign modbus address to slave devices.

    Any ideas?

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