Modbus Software, Driver and Libraries
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Modbus Master Delphi Library Class List

Here are the classes, structs, unions and interfaces with brief descriptions:
EBusProtocolExceptionGeneral fieldbus protocol error
EChecksumExceptionChecksum error
EConnectionWasClosedRemote peer closed TCP/IP connection
EEvaluationExpiredEvaluation expired
EFiledesExceededFile descriptors exceeded
EIllegalArgumentErrorIllegal argument error
EIllegalStateErrorIllegal state error
EInvalidFrameExceptionInvalid frame error
EInvalidReplyExceptionInvalid reply error
EListenFailedListen failed
EMbusIllegalAddressExceptionIllegal Data Address exception response
EMbusIllegalFunctionExceptionIllegal Function exception response
EMbusIllegalValueExceptionIllegal Data Value exception response
EMbusResponseExceptionModbus
EMbusSlaveFailureExceptionSlave Device Failure exception response
EOpenErrPort or socket open error
EPortAlreadyBoundTCP port already bound
EPortAlreadyOpenSerial port already open
EPortNoAccessNo permission to access serial port or TCP port
EPortNotAvailTCP port not available
EReplyTimeoutExceptionReply time-out
ESocketLibErrorSocket library error
ETcpipConnectErrTCP/IP connection error
TMbusAsciiMasterProtocolModbus ASCII Master Protocol class
TMbusMasterFunctionsBase class which implements Modbus data and control functions
TMbusRtuMasterProtocolModbus RTU Master Protocol class
TMbusRtuOverTcpMasterProtocolEncapsulated Modbus RTU Master Protocol class
TMbusSerialMasterProtocolBase class for serial serial master protocols
TMbusTcpMasterProtocolMODBUS/TCP Master Protocol class