前端开源库-node-modbus

[](http://badge.fury.io/js/node-modbus) [](https://travis-ci.org/biancode/node-modbus) [](http://www.npm-stats.com/~packages/node-modbus) node-modbus =========== ## Is not maintained anymore. This package was a mix of all existing Node.js Modbus packages sometime before. Now we have a great state of very good Modbus packages like: * [modbus-serial][4] (works for TCP and Serial) * [jsmodbus][3] (root of this package). ## Feel free to contact me to get this package on NPM to provide your package under the name node-modbus! *just supported until Node 8 LTS* # Install Run the following command in the root directory of your Node-RED install npm install node-modbus Run the following command for global install npm install -g node-modbus Testing ------- The test files are implemented using [mocha](https://github.com/visionmedia/mocha) and sinon. Simply use `npm-update.sh` in the source code project. To run the tests type from the projects root folder `mocha test/*`. Please feel free to fork and add your own tests. Examples -------- ### Server TCP ```js let node_modbus = require('node-modbus') let server = node_modbus.server.tcp.complete({ port : 502, responseDelay: 200 }) ``` ### Client TCP ```js const node_modbus = require('node-modbus') const client = node_modbus.client.tcp.complete({ 'host': 'modbus.server.local', /* IP or name of server host */ 'port': 502, /* well known Modbus port */ 'unitId': 1, 'timeout': 2000, /* 2 sec */ 'autoReconnect': true, /* reconnect on connection is lost */ 'reconnectTimeout': 15000, /* wait 15 sec if auto reconnect fails to often */ 'logLabel' : 'ModbusClientTCP', /* label to identify in log files */ 'logLevel': 'debug', /* for less log use: info, warn or error */ 'logEnabled': true }) const time_interval = 1000 client.connect() client.on('connect', function () { setInterval( function () { client.readCoils(0, 13).then((response) => console.log(response.payload)) }, time_interval) /* reading coils every second */ }) ``` ### Server Serial TBD ### Client Serial ```js const node_modbus = require('node-modbus') const client = node_modbus.client.serial.complete({ 'portName': '/dev/ttyS0', /* COM1 */ 'baudRate': 9600, /* */ 'dataBits': 8, /* 5, 6, 7 */ 'stopBits': 1, /* 1.5, 2 */ 'parity': 'none', /* even, odd, mark, space */ 'connectionType': 'RTU', /* RTU or ASCII */ 'connectionDelay': 250, /* 250 msec - sometimes you need more on windows */ 'timeout': 2000, /* 2 sec */ 'autoReconnect': true, /* reconnect on connection is lost */ 'reconnectTimeout': 15000, /* wait 15 sec if auto reconnect fails to often */ 'logLabel' : 'ModbusClientSerial', /* label to identify in log files */ 'logLevel': 'debug', /* for less log use: info, warn or error */ 'logEnabled': true }) /* here we need none connect call */ const time_interval = 1000 client.on('connect', function () { setInterval( function () { client.readCoils(0, 13).then((response) => console.log(response.payload)) }, time_interval) /* reading coils every second */ }) ``` ## License [MIT](LICENSE) Based on [jsmodbus][1] [1]:https://github.com/Cloud-Automation/node-modbus [2]:https://github.com/visionmedia/mocha [3]:https://www.npmjs.com/package/jsmodbus [4]:https://www.npmjs.com/package/modbus-serial