modbus

package module

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Versions in this module

v1

v1.6.1

Aug 7, 2023

v1.6.0

Nov 1, 2022

Changes in this version

type ClientConfiguration

+ Logger *log.Logger

type ServerConfiguration

+ Logger *log.Logger

v1.5.1

Sep 5, 2022

v1.5.0

Mar 5, 2022

Changes in this version

type ModbusClient

+ func (mc *ModbusClient) ReadBytes(addr uint16, quantity uint16, regType RegType) (values []byte, err error)

+ func (mc *ModbusClient) ReadRawBytes(addr uint16, quantity uint16, regType RegType) (values []byte, err error)

+ func (mc *ModbusClient) WriteBytes(addr uint16, values []byte) (err error)

+ func (mc *ModbusClient) WriteRawBytes(addr uint16, values []byte) (err error)

v1.4.0

Nov 27, 2021

v1.3.0

Jan 25, 2021

v1.2.1

Sep 28, 2020

v1.2.0

Aug 30, 2020

Changes in this version

+ func LoadCertPool(filePath string) (cp *x509.CertPool, err error)

type ClientConfiguration

+ TLSClientCert *tls.Certificate

+ TLSRootCAs *x509.CertPool

type CoilsRequest

+ ClientRole string

type DiscreteInputsRequest

+ ClientRole string

type HoldingRegistersRequest

+ ClientRole string

type InputRegistersRequest

+ ClientRole string

type ServerConfiguration

+ TLSClientCAs *x509.CertPool

+ TLSServerCert *tls.Certificate

v1.1.0

Aug 6, 2020

Changes in this version

+ type Error string

+ func (me Error) Error() (s string)

v1.0.0

Apr 17, 2020

Changes in this version

+ type CoilsRequest struct

+ Addr uint16

+ Args []bool

+ ClientAddr string

+ IsWrite bool

+ Quantity uint16

+ UnitId uint8

+ type DiscreteInputsRequest struct

+ Addr uint16

+ ClientAddr string

+ Quantity uint16

+ UnitId uint8

+ type HoldingRegistersRequest struct

+ Addr uint16

+ Args []uint16

+ ClientAddr string

+ IsWrite bool

+ Quantity uint16

+ UnitId uint8

+ type InputRegistersRequest struct

+ Addr uint16

+ ClientAddr string

+ Quantity uint16

+ UnitId uint8

v0

v0.1.0

Apr 17, 2020

Changes in this version

+ const BIG_ENDIAN

+ const EX_ACKNOWLEDGE

+ const EX_GW_PATH_UNAVAILABLE

+ const EX_GW_TARGET_FAILED_TO_RESPOND

+ const EX_ILLEGAL_DATA_ADDRESS

+ const EX_ILLEGAL_DATA_VALUE

+ const EX_ILLEGAL_FUNCTION

+ const EX_MEMORY_PARITY_ERROR

+ const EX_SERVER_DEVICE_BUSY

+ const EX_SERVER_DEVICE_FAILURE

+ const FC_MASK_WRITE_REGISTER

+ const FC_READ_COILS

+ const FC_READ_DISCRETE_INPUTS

+ const FC_READ_FIFO_QUEUE

+ const FC_READ_FILE_RECORD

+ const FC_READ_HOLDING_REGISTERS

+ const FC_READ_INPUT_REGISTERS

+ const FC_READ_WRITE_MULTILE_REGISTERS

+ const FC_WRITE_FILE_RECORD

+ const FC_WRITE_MULTIPLE_COILS

+ const FC_WRITE_MULTIPLE_REGISTERS

+ const FC_WRITE_SINGLE_COIL

+ const FC_WRITE_SINGLE_REGISTER

+ const HIGH_WORD_FIRST

+ const HOLDING_REGISTER

+ const INPUT_REGISTER

+ const LITTLE_ENDIAN

+ const LOW_WORD_FIRST

+ const PARITY_EVEN

+ const PARITY_NONE

+ const PARITY_ODD

+ const RTU_OVER_TCP_TRANSPORT

+ const RTU_TRANSPORT

+ const TCP_TRANSPORT

+ var ErrAcknowledge error = errors.New("request acknowledged")

+ var ErrBadCRC error = errors.New("bad crc")

+ var ErrBadTransactionId error = errors.New("bad transaction id")

+ var ErrBadUnitId error = errors.New("bad unit id")

+ var ErrConfigurationError error = errors.New("configuration error")

+ var ErrGWPathUnavailable error = errors.New("gateway path unavailable")

+ var ErrGWTargetFailedToRespond error = errors.New("gateway target device failed to respond")

+ var ErrIllegalDataAddress error = errors.New("illegal data address")

+ var ErrIllegalDataValue error = errors.New("illegal data value")

+ var ErrIllegalFunction error = errors.New("illegal function")

+ var ErrMemoryParityError error = errors.New("memory parity error")

+ var ErrProtocolError error = errors.New("protocol error")

+ var ErrRequestTimedOut error = errors.New("request timed out")

+ var ErrServerDeviceBusy error = errors.New("server device busy")

+ var ErrServerDeviceFailure error = errors.New("server device failure")

+ var ErrShortFrame error = errors.New("short frame")

+ var ErrUnexpectedParameters error = errors.New("unexpected parameters")

+ var ErrUnknownProtocolId error = errors.New("unknown protocol identifier")

+ type ClientConfiguration struct

+ DataBits uint

+ Parity uint

+ Speed uint

+ StopBits uint

+ Timeout time.Duration

+ URL string

+ type Endianness uint

+ type ModbusClient struct

+ func NewClient(conf *ClientConfiguration) (mc *ModbusClient, err error)

+ func (mc *ModbusClient) Close() (err error)

+ func (mc *ModbusClient) Open() (err error)

+ func (mc *ModbusClient) ReadCoil(addr uint16) (value bool, err error)

+ func (mc *ModbusClient) ReadCoils(addr uint16, quantity uint16) (values []bool, err error)

+ func (mc *ModbusClient) ReadDiscreteInput(addr uint16) (value bool, err error)

+ func (mc *ModbusClient) ReadDiscreteInputs(addr uint16, quantity uint16) (values []bool, err error)

+ func (mc *ModbusClient) ReadFloat32(addr uint16, regType RegType) (value float32, err error)

+ func (mc *ModbusClient) ReadFloat32s(addr uint16, quantity uint16, regType RegType) (values []float32, err error)

+ func (mc *ModbusClient) ReadFloat64(addr uint16, regType RegType) (value float64, err error)

+ func (mc *ModbusClient) ReadFloat64s(addr uint16, quantity uint16, regType RegType) (values []float64, err error)

+ func (mc *ModbusClient) ReadRegister(addr uint16, regType RegType) (value uint16, err error)

+ func (mc *ModbusClient) ReadRegisters(addr uint16, quantity uint16, regType RegType) (values []uint16, err error)

+ func (mc *ModbusClient) ReadUint32(addr uint16, regType RegType) (value uint32, err error)

+ func (mc *ModbusClient) ReadUint32s(addr uint16, quantity uint16, regType RegType) (values []uint32, err error)

+ func (mc *ModbusClient) ReadUint64(addr uint16, regType RegType) (value uint64, err error)

+ func (mc *ModbusClient) ReadUint64s(addr uint16, quantity uint16, regType RegType) (values []uint64, err error)

+ func (mc *ModbusClient) SetEncoding(endianness Endianness, wordOrder WordOrder) (err error)

+ func (mc *ModbusClient) SetUnitId(id uint8) (err error)

+ func (mc *ModbusClient) WriteCoil(addr uint16, value bool) (err error)

+ func (mc *ModbusClient) WriteCoils(addr uint16, values []bool) (err error)

+ func (mc *ModbusClient) WriteFloat32(addr uint16, value float32) (err error)

+ func (mc *ModbusClient) WriteFloat32s(addr uint16, values []float32) (err error)

+ func (mc *ModbusClient) WriteFloat64(addr uint16, value float64) (err error)

+ func (mc *ModbusClient) WriteFloat64s(addr uint16, values []float64) (err error)

+ func (mc *ModbusClient) WriteRegister(addr uint16, value uint16) (err error)

+ func (mc *ModbusClient) WriteRegisters(addr uint16, values []uint16) (err error)

+ func (mc *ModbusClient) WriteUint32(addr uint16, value uint32) (err error)

+ func (mc *ModbusClient) WriteUint32s(addr uint16, values []uint32) (err error)

+ func (mc *ModbusClient) WriteUint64(addr uint16, value uint64) (err error)

+ func (mc *ModbusClient) WriteUint64s(addr uint16, values []uint64) (err error)

+ type ModbusServer struct

+ func NewServer(conf *ServerConfiguration, reqHandler RequestHandler) (ms *ModbusServer, err error)

+ func (ms *ModbusServer) Start() (err error)

+ func (ms *ModbusServer) Stop() (err error)

+ type RegType uint

+ type RequestHandler interface

+ HandleCoils func(unitId uint8, addr uint16, quantity uint16, isWrite bool, args []bool) (res []bool, err error)

+ HandleDiscreteInputs func(unitId uint8, addr uint16, quantity uint16) (res []bool, err error)

+ HandleHoldingRegisters func(unitId uint8, addr uint16, quantity uint16, isWrite bool, args []uint16) (res []uint16, err error)

+ HandleInputRegisters func(unitId uint8, addr uint16, quantity uint16) (res []uint16, err error)

+ type ServerConfiguration struct

+ MaxClients uint

+ Timeout time.Duration

+ URL string

+ type WordOrder uint

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