utils

package

v0.3.0 Latest Latest Go to latest Published: Apr 21, 2021 License: BSD-3-Clause Imports: 5 Imported by: 0

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Repository

github.com/OpenVoIP/modbus

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Documentation ¶

Index ¶

Constants
func DataBlock(value ...uint16) []byte
func DataBlockSuffix(suffix []byte, value ...uint16) []byte
func GetLogger() *log.Logger
type ModbusError
- func (e *ModbusError) Error() string

Constants ¶

View Source

const (
	// Bit access
	FuncCodeReadDiscreteInputs = 2
	FuncCodeReadCoils          = 1
	FuncCodeWriteSingleCoil    = 5
	FuncCodeWriteMultipleCoils = 15

	// 16-bit access
	FuncCodeReadInputRegisters         = 4
	FuncCodeReadHoldingRegisters       = 3
	FuncCodeWriteSingleRegister        = 6
	FuncCodeWriteMultipleRegisters     = 16
	FuncCodeReadWriteMultipleRegisters = 23
	FuncCodeMaskWriteRegister          = 22
	FuncCodeReadFIFOQueue              = 24
)

View Source

const (
	ExceptionCodeIllegalFunction                    = 1
	ExceptionCodeIllegalDataAddress                 = 2
	ExceptionCodeIllegalDataValue                   = 3
	ExceptionCodeServerDeviceFailure                = 4
	ExceptionCodeAcknowledge                        = 5
	ExceptionCodeServerDeviceBusy                   = 6
	ExceptionCodeMemoryParityError                  = 8
	ExceptionCodeGatewayPathUnavailable             = 10
	ExceptionCodeGatewayTargetDeviceFailedToRespond = 11
)

Variables ¶

This section is empty.

Functions ¶

func DataBlock ¶

func DataBlock(value ...uint16) []byte

DataBlock creates a sequence of uint16 data.

func DataBlockSuffix ¶

func DataBlockSuffix(suffix []byte, value ...uint16) []byte

DataBlockSuffix creates a sequence of uint16 data and append the suffix plus its length.

func GetLogger ¶

func GetLogger() *log.Logger

Types ¶

type ModbusError ¶

type ModbusError struct {
	FunctionCode  byte
	ExceptionCode byte
}

ModbusError implements error interface.

func (*ModbusError) Error ¶

func (e *ModbusError) Error() string

Error converts known modbus exception code to error message.

Source Files ¶

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