remote control for modbus

Discussion in 'General Electronics Chat' started by majorkuso, Jan 14, 2014.

  1. majorkuso

    Thread Starter Active Member

    Aug 21, 2009
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    Does anyone know of a way to send the modbus protocol to a remote site device such as plc system with minimal setup?
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
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    From what? Pic?
    The data packet protocol is on the Modbus site in detail.
    Max.
     
  3. Papabravo

    Expert

    Feb 24, 2006
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    Can you give a precise definition of "minimal setup"?
     
  4. GetDeviceInfo

    Senior Member

    Jun 7, 2009
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  5. MrChips

    Moderator

    Oct 2, 2009
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    There is nothing special about modbus. It is simply a serial communications protocol.
    You can send it to a remote site just like any other serial data transmission.
     
  6. MaxHeadRoom

    Expert

    Jul 18, 2013
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    It uses standard RS232 or other serial protocol, But you have to conform to the correct data packet format and timing of packet send receive delay/timing, device address etc.
    If sending from a Pic or other programmed device, this has to be programmed apart from the inherent USART default module.
    Max.
     
  7. majorkuso

    Thread Starter Active Member

    Aug 21, 2009
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    sorry for confusion by minimal setup i mean for the client not to have to add a whole lot of special hardware . the reason I ask is my professor wants to communicate with plc controllers from one city to another via his laptop through the internet.
    also on a side note does anyone know of a transformer for building a 1v to 2v max 20amp power supply for driving 12w laser diode fap having trouble finding one.
     
  8. MaxHeadRoom

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    Jul 18, 2013
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