Struct ModbusSimulator 

pub struct ModbusSimulator { /* private fields */ }

Device simulator wrapping a ModbusServer with preconfigured register maps.

Implementations

impl ModbusSimulator

pub fn from_yaml(yaml: &str) -> Result<Self, SimError>

Create a simulator from a YAML configuration string.

Errors

Returns SimError::ConfigParse if the YAML is invalid, or SimError::Config if any configured block is out of range.

pub fn from_config(config: SimConfig) -> Result<Self, SimError>

Create a simulator from a programmatic configuration.

Errors

Returns SimError::Config if any configured block exceeds the Modbus 16-bit address space.

pub async fn start(&mut self) -> Result<SocketAddr, SimError>

Start the simulator server. Returns the bound address.

Errors

Returns SimError::Server if the server fails to start.

pub async fn stop(&mut self)

Stop the simulator server.

pub fn set_holding_register( &self, address: u16, value: u16, ) -> Result<(), SimError>

Update a holding register at runtime.

pub fn set_input_register( &self, address: u16, value: u16, ) -> Result<(), SimError>

Update an input register at runtime.

pub fn set_coil(&self, address: u16, value: bool) -> Result<(), SimError>

Update a coil at runtime.

pub fn local_addr(&self) -> SocketAddr

Get the bound address (only valid after start()).

Panics

Panics if the server hasn’t been started.

Trait Implementations

impl Debug for ModbusSimulator

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

Formats the value using the given formatter.