modbus

package module

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Versions in this module

v0

v0.0.9

Dec 27, 2022

v0.0.8

Aug 30, 2022

v0.0.7

Aug 30, 2022

v0.0.6

Aug 30, 2022

Changes in this version

type Client

+ func (c *Client) Ready() bool

v0.0.5

May 24, 2022

Changes in this version

+ var ErrMismatchedProtocolId = errors.New("modbus: mismatch of protocol id")

+ var ErrMismatchedTransactionId = errors.New("modbus: mismatch of transaction id")

+ var ErrMismatchedUnitId = errors.New("modbus: mismatch of unit id")

type Config

+ UnitID byte

v0.0.4

Mar 1, 2022

v0.0.3

Jan 6, 2022

v0.0.2

Nov 24, 2021

Changes in this version

+ type Config struct

+ Endpoint string

+ Kind string

+ Mode string

+ func (cfg *Config) Verify() error

+ func (cfg Config) Client() *Client

+ func (cfg Config) Server() *Server

type Exception

+ const Acknowledge

+ const GatewayPathUnavailable

+ const GatewayTargetDeviceFailedToRespond

+ const IllegalDataAddress

+ const IllegalDataValue

+ const IllegalFunction

+ const MemoryParityError

+ const SlaveDeviceBusy

+ const SlaveDeviceFailure

+ func (ex Exception) Error() string

v0.0.1

Nov 17, 2021

Changes in this version

+ var ErrDataSizeExceeded = errors.New("modbus: data size exceeds limit")

+ var ErrInvalidParameter = errors.New("modbus: given parameter violates restriction")

+ var ErrMissmatchedProtocolId = errors.New("modbus: missmatch of protocol id")

+ var ErrMissmatchedTransactionId = errors.New("modbus: missmatch of transaction id")

+ var ErrMissmatchedUnitId = errors.New("modbus: missmatch of unit id")

+ var ExAcknowledge = newException(0x05)

+ var ExGatewayPathUnavailable = newException(0x0A)

+ var ExGatewayTargetDeviceFailedToRespond = newException(0x0B)

+ var ExIllegalDataAddress = newException(0x02)

+ var ExIllegalDataValue = newException(0x03)

+ var ExIllegalFunction = newException(0x01)

+ var ExMemoryParityError = newException(0x08)

+ var ExSlaveDeviceBusy = newException(0x06)

+ var ExSlaveDeviceFailure = newException(0x04)

+ type Client struct

+ func (c *Client) Connect(ctx context.Context, opts Options) (err error)

+ func (c *Client) Disconnect() error

+ func (c *Client) ReadCoils(ctx context.Context, address, quantity uint16) (status []bool, err error)

+ func (c *Client) ReadDiscreteInputs(ctx context.Context, address, quantity uint16) (status []bool, err error)

+ func (c *Client) ReadHoldingRegisters(ctx context.Context, address, quantity uint16) (values []byte, err error)

+ func (c *Client) ReadInputRegisters(ctx context.Context, address, quantity uint16) (values []byte, err error)

+ func (c *Client) ReadWriteMultipleRegisters(ctx context.Context, rAddress, rQuantity, wAddress uint16, values []byte) (res []byte, err error)

+ func (c *Client) Request(ctx context.Context, code byte, req []byte) (res []byte, err error)

+ func (c *Client) WriteMultipleCoils(ctx context.Context, address uint16, status ...bool) (err error)

+ func (c *Client) WriteMultipleRegisters(ctx context.Context, address uint16, values []byte) (err error)

+ func (c *Client) WriteSingleCoil(ctx context.Context, address uint16, status bool) (err error)

+ func (c *Client) WriteSingleRegister(ctx context.Context, address, value uint16) (err error)

+ type Exception interface

+ Code func() byte

+ type Handler interface

+ Handle func(ctx context.Context, code byte, req []byte) (res []byte, ex Exception)

+ type Mux struct

+ Fallback func(ctx context.Context, code byte, req []byte) (res []byte, ex Exception)

+ ReadCoils func(ctx context.Context, address, quantity uint16) (res []bool, ex Exception)

+ ReadDiscreteInputs func(ctx context.Context, address, quantity uint16) (res []bool, ex Exception)

+ ReadHoldingRegisters func(ctx context.Context, address, quantity uint16) (res []byte, ex Exception)

+ ReadInputRegisters func(ctx context.Context, address, quantity uint16) (res []byte, ex Exception)

+ ReadWriteMultipleRegisters func(ctx context.Context, rAddress, rQuantity, wAddress uint16, values []byte) (res []byte, ex Exception)

+ WriteMultipleCoils func(ctx context.Context, address uint16, status []bool) (ex Exception)

+ WriteMultipleRegisters func(ctx context.Context, address uint16, values []byte) (ex Exception)

+ WriteSingleCoil func(ctx context.Context, address uint16, status bool) (ex Exception)

+ WriteSingleRegister func(ctx context.Context, address, value uint16) (ex Exception)

+ func (h *Mux) Handle(ctx context.Context, code byte, req []byte) (res []byte, ex Exception)

+ type Options struct

+ Endpoint string

+ Kind string

+ Mode string

+ func (o *Options) Verify() error

+ type Server struct

+ func (s *Server) Serve(ctx context.Context, opts Options, h Handler) (err error)

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