modbus-serial
Version:
A pure JavaScript implemetation of MODBUS-RTU (Serial and TCP) for NodeJS.
50 lines (41 loc) • 1.11 kB
JavaScript
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);
};
;