Recent content by Zeeee

  1. Z

    Question: Holding Register can do everything?

    Thanks. Speaking of function, can someone actually put all types of data including AI, AO, DI, DO, into holding registers? To me, holding register seems to be primary choice as long as space is available.
  2. Z

    Question: Holding Register can do everything?

    I have a question which might be very simple to Modbus professionals: Holding register (AO) is read/write. So, why do we even need input register (AI), discreate coil (DO) and contact (DI) ? I imagine that 16 bit AI data can be stored in holding register as well and use code 3 to read. It...
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