Enum ExceptionCode 

#[repr(u8)]
pub enum ExceptionCode {
    IllegalFunction = 1,
    IllegalDataAddress = 2,
    IllegalDataValue = 3,
    ServerDeviceFailure = 4,
}

Modbus exception codes as defined in the Modbus Application Protocol Specification V1.1b3.

These codes are used in exception responses (function code | 0x80) to indicate the type of error that occurred when processing a request.

Variants

IllegalFunction = 1

0x01: Illegal Function - The function code is not supported by the server.

IllegalDataAddress = 2

0x02: Illegal Data Address - The addressed register does not exist.

IllegalDataValue = 3

0x03: Illegal Data Value - The quantity of items to read/write is invalid.

ServerDeviceFailure = 4

0x04: Server Device Failure - Unrecoverable device failure.

Trait Implementations

impl Clone for ExceptionCode

fn clone(&self) -> ExceptionCode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExceptionCode

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

Formats the value using the given formatter.

impl From<ExceptionCode> for u8

fn from(code: ExceptionCode) -> Self

Converts to this type from the input type.

impl PartialEq for ExceptionCode

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ExceptionCode

impl Eq for ExceptionCode

impl StructuralPartialEq for ExceptionCode