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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#ifndef QMODBUS_SYMBOLS_P_H
#define QMODBUS_SYMBOLS_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/qtypes.h>
// MBAP header: transaction id (2), protocol id (2), length (2), unit id (1)
constexpr int mbapHeaderSize = 7;
// The 253 byte maximum PDU plus the MBAP header
constexpr int maxBytesModbusADU = 260;
// The length field counts the Unit Identifier, which mbapHeaderSize already
// includes, so the frame is one byte shorter than the two added together.
constexpr int mbapAduSize(quint16 mbapLength)
{
return mbapHeaderSize + mbapLength - 1;
}
// The smallest frame carries a one byte PDU, the function code alone. The
// largest is a maxBytesModbusADU sized frame.
constexpr bool isValidAduSize(int aduSize)
{
return aduSize >= mbapHeaderSize + 1 && aduSize <= maxBytesModbusADU;
}
enum Coil {
On = 0xff00,
Off = 0x0000
};
namespace Diagnostics {
enum SubFunctionCode {
ReturnQueryData = 0x0000,
RestartCommunicationsOption = 0x0001,
ReturnDiagnosticRegister = 0x0002,
ChangeAsciiInputDelimiter = 0x0003,
ForceListenOnlyMode = 0x0004,
ClearCountersAndDiagnosticRegister = 0x000a,
ReturnBusMessageCount = 0x000b,
ReturnBusCommunicationErrorCount = 0x000c, // CRC error counter
ReturnBusExceptionErrorCount = 0x000d,
ReturnServerMessageCount = 0x000e,
ReturnServerNoResponseCount = 0x000f,
ReturnServerNAKCount = 0x0010,
ReturnServerBusyCount = 0x0011,
ReturnBusCharacterOverrunCount = 0x0012,
ClearOverrunCounterAndFlag = 0x0014
};
}
namespace EncapsulatedInterfaceTransport {
enum SubFunctionCode {
CanOpenGeneralReference = 0x0D,
ReadDeviceIdentification = 0x0E
};
}
#endif // QMODBUS_SYMBOLS_P_H