You should connect to LCR600 with RS-232. Won't work with Serial TTL Voltage level
const lcr600 = require('lcr600');
const LCR600 = new lcr600({
hostAddress: 0xff,
LCRNodeAddress: 0x01,
port: "/dev/ttyUSB0",
baud: 19200,
debug: true
});const config = {
hostAddress: 0xff, // if this field is left empty, would be default to 0xff
LCRNodeAddress: 0x01, // LCR address device used
port: "/dev/ttyUSB0", // COM port where device is connected
baud: 19200, // default baud rate for LCR 600
debug: true // optional. Default to false
};
const lcr600 = require('lcr600');
const LCR600 = new lcr600(config, config.debug);
// listener for each summary
LCR600.on('GrossCount_NE', received => {
const data = {
...received,
attributes: {
unitId: LCR600.getAttribute('UnitID_UL'),
meterId: LCR600.getAttribute('MeterID_WM'),
qtyUnit: LCR600.getAttribute('QtyUnits_WM'),
},
};
console.dir(data, {depth:4});
console.log('---------------------------------------');
});
// successfully parsing data
LCR600.on('data', (received) => {
console.log('data:', received);
console.log('---------------------------------------');
});
// failed when parsing data, only contains code for debugging purpose
LCR600.on('failed', received => {
console.error('failed:', received);
console.log('---------------------------------------');
});
// switch pos changed
LCR600.on('switch', received => {
console.log('switch:', received);
console.log('---------------------------------------');
});
(async() => {
const interval = config.interval || 100;
// connect to Serialport
await LCR600.connect();
// get Product Id and Set synchronization
await LCR600.getProductID(true);
// Set attributes data from LCR600
await LCR600.requestAttribute('QtyUnits_WM');
await LCR600.requestAttribute('UnitID_UL');
await LCR600.requestAttribute('MeterID_WM');
console.log('List set attributes:', LCR600.getAttribute());
console.log('---------------------------------------');
// use setTimeout instead of setInterval due to async
const __loop = async () => {
await LCR600.getData('GrossCount_NE');
setTimeout(__loop, interval);
};
// start infinite loop
__loop();
})();