Struct ModbusBuilder 

pub struct ModbusBuilder { /* private fields */ }

Builder for Modbus packets.

Supports three frame types:

• TCP (MBAP): Default. Adds a 7-byte MBAP header.
• RTU: Binary serial framing with CRC-16 appended.
• ASCII: Hex-encoded with ‘:’ prefix, LRC, and CRLF suffix.

Implementations

impl ModbusBuilder

pub fn new() -> Self

Create a new Modbus builder with TCP (MBAP) framing.

pub fn tcp(self) -> Self

Use Modbus/TCP (MBAP) framing (default).

pub fn rtu(self) -> Self

Use Modbus RTU (serial binary) framing.

pub fn ascii(self) -> Self

Use Modbus ASCII (serial hex-encoded) framing.

pub fn trans_id(self, id: u16) -> Self

Set the Transaction ID (MBAP only).

pub fn proto_id(self, id: u16) -> Self

Set the Protocol ID (MBAP only; should be 0x0000).

pub fn unit_id(self, id: u8) -> Self

Set the Unit ID / Slave Address.

pub fn func_code(self, fc: u8) -> Self

Set the Function Code.

pub fn start_addr(self, addr: u16) -> Self

Set the Start Address (for Read/Write requests).

pub fn quantity(self, qty: u16) -> Self

Set the Quantity (for Read requests).

pub fn output_value(self, val: u16) -> Self

Set the Output Value (for Write Single Coil/Register).

pub fn values(self, vals: Vec<u16>) -> Self

Set register values (for Write Multiple Registers).

pub fn coil_values(self, vals: Vec<bool>) -> Self

Set coil values (for Write Multiple Coils).

pub fn sub_func(self, sf: u16) -> Self

Set the Sub-function code (for Diagnostics 0x08).

pub fn and_mask(self, mask: u16) -> Self

Set the AND mask (for Mask Write Register 0x16).

pub fn or_mask(self, mask: u16) -> Self

Set the OR mask (for Mask Write Register 0x16).

pub fn pdu_data(self, data: Vec<u8>) -> Self

Set raw PDU data (after the function code). This overrides the automatic PDU building.

pub fn extra_data(self, data: Vec<u8>) -> Self

Set extra data bytes (for diagnostics data field, etc.).

pub fn header_size(&self) -> usize

Compute the header size for this builder.

pub fn build(&self) -> Vec<u8>

Build the Modbus frame into bytes.

Trait Implementations

impl Clone for ModbusBuilder

fn clone(&self) -> ModbusBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ModbusBuilder

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

Formats the value using the given formatter.

impl Default for ModbusBuilder

fn default() -> Self

Returns the “default value” for a type.

impl IntoLayerStackEntry for ModbusBuilder

fn into_layer_stack_entry(self) -> LayerStackEntry