Enum ClientError 

pub enum ClientError {
    Request(ModbusError),
    BroadcastRead,
    Port(PortError),
    Timeout {
        unit: u8,
        received: usize,
    },
    Frame(ModbusError),
    WrongUnit {
        expected: u8,
        found: u8,
    },
    WrongFunction {
        expected: u8,
        found: u8,
    },
    Mismatch {
        unit: u8,
    },
    Exception {
        unit: u8,
        function: u8,
        exception: Exception,
    },
}

Why a transaction failed.

Variants

Request(ModbusError)

The request could not be built: a quantity outside what one request carries.

BroadcastRead

A read was addressed to the broadcast address, which no device answers.

Port(PortError)

The serial port failed.

Timeout

No complete reply arrived within the response timeout.

Fields

unit: u8

The unit that was asked.

received: usize

How many bytes of a reply had arrived.

Frame(ModbusError)

The reply failed its CRC or is not the shape its function gives.

WrongUnit

A reply came back from a unit other than the one asked.

Fields

expected: u8

The unit that was asked.

found: u8

The unit that answered.

WrongFunction

A reply answered a function other than the one asked.

Fields

expected: u8

The function that was asked.

found: u8

The function the reply names.

Mismatch

A well-formed reply that does not answer the request: a write echoed other values, or a read returned another count.

Fields

unit: u8

The unit that answered.

Exception

The device refused the request.

Fields

unit: u8

The unit that refused.

function: u8

The function it refused.

exception: Exception

Why.

Trait Implementations

impl Clone for ClientError

fn clone(&self) -> ClientError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ClientError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for ClientError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for ClientError

impl Error for ClientError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for ClientError

fn eq(&self, other: &ClientError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ClientError