Enum Exception

#[repr(u8)]
pub enum Exception {
    Undefined(u8),
    IllegalFunction = 1,
    IllegalDataAddress = 2,
    IllegalDataValue = 3,
    DeviceFailure = 4,
    Acknowledge = 5,
    DeviceBusy = 6,
    MemoryParityError = 8,
    GatewayPathUnavailable = 10,
    GatewayTargetDeviceFailedToRespond = 11,
}

Modbus RTU exception codes.

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Supports

• u8 -> Exception
• Exception -> u8

Variants

Undefined(u8)

An undefined exception code not covered by this crate.

IllegalFunction = 1

The function code received is not supported by the device or is invalid in the current state.

IllegalDataAddress = 2

The requested address range is invalid for the device.

IllegalDataValue = 3

A value in the request is not valid or does not match the expected structure.

DeviceFailure = 4

An unrecoverable device error occurred during processing.

Acknowledge = 5

The request was accepted but requires a long time to complete. Prevents master timeout.

DeviceBusy = 6

The device is busy processing a long-duration command. Try again later.

MemoryParityError = 8

Memory parity error.

GatewayPathUnavailable = 10

The gateway could not establish a communication path. Check configuration or load.

GatewayTargetDeviceFailedToRespond = 11

The gateway received no response from the target device.

Implementations

impl Exception

pub fn is_ack(&self) -> bool

Returns true if the exception is Exception::Acknowledge.

---

Returns

true if the exception is Exception::Acknowledge, otherwise false.

Trait Implementations

impl Clone for Exception

fn clone(&self) -> Exception

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Exception

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

Formats the value using the given formatter.

impl From<&Exception> for u8

fn from(value: &Exception) -> Self

Converts to this type from the input type.

impl From<Exception> for u8

fn from(value: Exception) -> Self

Converts to this type from the input type.

impl From<u8> for Exception

fn from(value: u8) -> Self

Converts to this type from the input type.

impl PartialEq for Exception

fn eq(&self, other: &Exception) -> 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 Exception

impl Eq for Exception

impl StructuralPartialEq for Exception