{===============================================================================

The contents of this file are subject to the Mozilla Public License Version 1.1
(the "License"); you may not use this file except in compliance with the
License. You may obtain a copy of the License at http://www.mozilla.org/MPL/

Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
the specific language governing rights and limitations under the License.

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GNU General Public License Version 2 or later (the "GPL"), in which case
the provisions of the GPL are applicable instead of those above. If you wish to
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to allow others to use your version of this file under the MPL, indicate your
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$Id: ModbusTypes.pas,v 1.3 2010/02/05 08:45:57 plpolak Exp $

===============================================================================}

{$I ModBusCompiler.inc}

unit ModbusTypes;

interface

type
  TModBusFunction = Byte;

type
  TModBusDataBuffer = array[0..260] of Byte;

type
  TModBusHeader = packed record
    TransactionID: Word;
    ProtocolID: Word;
    RecLength: Word;
    UnitID: Byte;
  end;

type
  TModBusRequestBuffer = packed record
    Header: TModBusHeader;
    FunctionCode: TModBusFunction;
    MBPData: TModBusDataBuffer;
  end;

type
  TModBusResponseBuffer = packed record
    Header: TModBusHeader;
    FunctionCode: TModBusFunction;
    MBPData: TModBusDataBuffer;
  end;

type
  TModBusExceptionBuffer = packed record
    Header: TModBusHeader;
    ExceptionFunction: TModBusFunction;
    ExceptionCode: Byte;
  end;


implementation

end.