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NativeModbusTransport

@totemsdk/edge-modbus

@totemsdk/edge-modbus / NativeModbusTransport

Class: NativeModbusTransport

Modbus transport port — injected by the caller.

Supports Modbus TCP (port 502) and Modbus RTU (serial). The caller provides the actual socket/serial implementation.

Implements​

Constructors​

Constructor​

new NativeModbusTransport(config?): NativeModbusTransport

Parameters​

config?​

NativeModbusConfig = {}

Returns​

NativeModbusTransport

Methods​

connect()​

connect(): Promise<void>

Open the connection.

Returns​

Promise<void>

Implementation of​

ModbusTransportPort.connect

disconnect()​

disconnect(): Promise<void>

Close the connection.

Returns​

Promise<void>

Implementation of​

ModbusTransportPort.disconnect

onError()​

onError(handler): () => void

Register a handler for connection errors.

Parameters​

handler​

(err) => void

Returns​

() => void

Implementation of​

ModbusTransportPort.onError

onFrame()​

onFrame(handler): () => void

Register a handler for unsolicited/inbound frames.

Parameters​

handler​

(frame) => void

Returns​

() => void

Implementation of​

ModbusTransportPort.onFrame

sendFrame()​

sendFrame(frame): Promise<Uint8Array<ArrayBufferLike>>

Send a raw Modbus frame and receive the response.

Parameters​

frame​

Uint8Array

Returns​

Promise<Uint8Array<ArrayBufferLike>>

Implementation of​

ModbusTransportPort.sendFrame