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modbus-serial

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A pure JavaScript implemetation of MODBUS-RTU (Serial and TCP) for NodeJS.

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"use strict"; const events = require("events"); const EventEmitter = events.EventEmitter || events; class Socket extends EventEmitter { connect(port, host, connectListener) { this.emit("connect"); if (connectListener) { connectListener(null); } } close(callback) { this.emit("close", false); if (callback) { callback(); } } send(buffer, offset, length, port, address, callback) { this._data = buffer; this._offset = offset; this._length = length; this._port = port; this._address = address; if (callback) { callback(null); } } bind() { this.emit("listening"); } // Obsolete? It doesn't reflect the dgram interface listen() { this.emit("listening"); } receive(buffer) { this.emit("message", buffer, { address: this._address, port: this._port, size: this._data.length }); } } exports.Socket = Socket; exports.createSocket = function(type, listener) { return new Socket(type, listener); };