Struct SyncModbusTcpClient 

pub struct SyncModbusTcpClient { /* private fields */ }

Blocking Modbus TCP client for use outside an async runtime.

Internally creates a single-threaded Tokio runtime and delegates to ModbusClient. All methods block the calling thread until the response arrives or the timeout expires.

Implementations

impl SyncModbusTcpClient

pub fn connect(addr: &str) -> Result<Self, SyncClientError>

Connect to a Modbus TCP device at addr (e.g. "192.168.1.10:502") with default config.

pub fn connect_with_config( addr: &str, config: ClientConfig, ) -> Result<Self, SyncClientError>

Connect to a Modbus TCP device with a custom ClientConfig.

pub fn config(&self) -> ClientConfig

Return the current client configuration.

pub fn read_coils( &self, unit_id: UnitId, start: u16, quantity: u16, ) -> Result<Vec<bool>, SyncClientError>

Read coils (FC01). See ModbusClient::read_coils.

pub fn read_discrete_inputs( &self, unit_id: UnitId, start: u16, quantity: u16, ) -> Result<Vec<bool>, SyncClientError>

Read discrete inputs (FC02). See ModbusClient::read_discrete_inputs.

pub fn read_holding_registers( &self, unit_id: UnitId, start: u16, quantity: u16, ) -> Result<Vec<u16>, SyncClientError>

Read holding registers (FC03). See ModbusClient::read_holding_registers.

pub fn read_input_registers( &self, unit_id: UnitId, start: u16, quantity: u16, ) -> Result<Vec<u16>, SyncClientError>

Read input registers (FC04). See ModbusClient::read_input_registers.

pub fn write_single_coil( &self, unit_id: UnitId, address: u16, value: bool, ) -> Result<(), SyncClientError>

Write a single coil (FC05). See ModbusClient::write_single_coil.

pub fn write_single_register( &self, unit_id: UnitId, address: u16, value: u16, ) -> Result<(), SyncClientError>

Write a single register (FC06). See ModbusClient::write_single_register.

pub fn mask_write_register( &self, unit_id: UnitId, address: u16, and_mask: u16, or_mask: u16, ) -> Result<(), SyncClientError>

Mask write register (FC22). See ModbusClient::mask_write_register.

pub fn write_multiple_coils( &self, unit_id: UnitId, start: u16, values: &[bool], ) -> Result<(), SyncClientError>

Write multiple coils (FC15). See ModbusClient::write_multiple_coils.

pub fn write_multiple_registers( &self, unit_id: UnitId, start: u16, values: &[u16], ) -> Result<(), SyncClientError>

Write multiple registers (FC16). See ModbusClient::write_multiple_registers.

pub fn read_write_multiple_registers( &self, unit_id: UnitId, read_start: u16, read_quantity: u16, write_start: u16, write_values: &[u16], ) -> Result<Vec<u16>, SyncClientError>

Read and write multiple registers (FC23). See ModbusClient::read_write_multiple_registers.

pub fn custom_request( &self, unit_id: UnitId, function_code: u8, payload: &[u8], ) -> Result<Vec<u8>, SyncClientError>

Send a custom function code request. See ModbusClient::custom_request.

pub fn report_server_id( &self, unit_id: UnitId, ) -> Result<ReportServerIdResponse, SyncClientError>

Report Server ID (FC17). See ModbusClient::report_server_id.

pub fn read_device_identification( &self, unit_id: UnitId, read_device_id_code: u8, object_id: u8, ) -> Result<ReadDeviceIdentificationResponse, SyncClientError>

Read Device Identification (FC43/0x0E). See ModbusClient::read_device_identification.

pub fn read_coils_raw( &self, unit_id: UnitId, start: u16, quantity: u16, ) -> Result<(Vec<u8>, u16), SyncClientError>

Read coils as raw packed bytes (FC01). See ModbusClient::read_coils_raw.

pub fn read_discrete_inputs_raw( &self, unit_id: UnitId, start: u16, quantity: u16, ) -> Result<(Vec<u8>, u16), SyncClientError>

Read discrete inputs as raw packed bytes (FC02). See ModbusClient::read_discrete_inputs_raw.

pub fn read_exception_status( &self, unit_id: UnitId, ) -> Result<u8, SyncClientError>

Read Exception Status (FC07). See ModbusClient::read_exception_status.

pub fn diagnostics( &self, unit_id: UnitId, sub_function: u16, data: u16, ) -> Result<(u16, u16), SyncClientError>

Diagnostics (FC08). See ModbusClient::diagnostics.

pub fn read_fifo_queue( &self, unit_id: UnitId, address: u16, ) -> Result<Vec<u16>, SyncClientError>

Read FIFO Queue (FC24). See ModbusClient::read_fifo_queue.