simple-modbus
Version:
A simple library for working with Modbus with Typescript bindings.
91 lines • 4.47 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var net_1 = __importDefault(require("net"));
require("../util/typed-event");
var modbus_server_1 = require("../modbus-server");
var modbus_tcp_command_factory_1 = require("./modbus-tcp-command-factory");
var modbus_commands_1 = require("../modbus-commands");
var ModbusTcpServer = /** @class */ (function (_super) {
__extends(ModbusTcpServer, _super);
function ModbusTcpServer(options) {
var _this_1 = _super.call(this) || this;
_this_1._commandFactory = new modbus_tcp_command_factory_1.ModbusTcpCommandFactory();
_this_1._options = options;
_this_1._commandFactory = new modbus_tcp_command_factory_1.ModbusTcpCommandFactory(options);
_this_1._tcpServer = net_1.default.createServer(function (socket) {
var _this = _this_1;
socket.on('data', function (data) {
try {
// Build object from packet
var command = _this_1._commandFactory.fromPacket(data);
// Listen for success or failure events being emitted from command object
command.onComplete.once(function (command) {
socket.write(command.responsePacket);
});
// Determine packet type and emit corresponding event type
switch (command.functionCode) {
case modbus_commands_1.ModbusFunctionCode.READ_COIL_STATUS:
_this.onReadCoilStatus.emit(command);
break;
case modbus_commands_1.ModbusFunctionCode.READ_INPUT_STATUS:
_this.onReadInputStatus.emit(command);
break;
case modbus_commands_1.ModbusFunctionCode.READ_HOLDING_REGISTERS:
_this.onReadHoldingRegisters.emit(command);
break;
case modbus_commands_1.ModbusFunctionCode.READ_INPUT_REGISTERS:
_this.onReadInputRegisters.emit(command);
break;
case modbus_commands_1.ModbusFunctionCode.FORCE_SINGLE_COIL:
_this.onForceSingleCoil.emit(command);
break;
case modbus_commands_1.ModbusFunctionCode.PRESET_SINGLE_REGISTER:
_this.onPresetSingleRegister.emit(command);
break;
case modbus_commands_1.ModbusFunctionCode.FORCE_MULTIPLE_COILS:
_this.onForceMultipleCoils.emit(command);
break;
case modbus_commands_1.ModbusFunctionCode.PRESET_MULTIPLE_REGISTERS:
_this.onPresetMultipleRegisters.emit(command);
break;
}
}
catch (e) {
// TODO: Explicit typeguard here, look into changing from try/catch
_this.onCommandError.emit(e);
}
});
socket.on('error', function (e) {
_this.onServerError.emit(e);
});
});
return _this_1;
}
ModbusTcpServer.prototype.listen = function (port) {
this._tcpServer.listen(port);
return this;
};
ModbusTcpServer.prototype.close = function () {
this._tcpServer.close();
return this;
};
return ModbusTcpServer;
}(modbus_server_1.ModbusServer));
exports.ModbusTcpServer = ModbusTcpServer;
//# sourceMappingURL=modbus-tcp-server.js.map