Error-events.js:141

[dmrathore]

hello, I am using the your package for my project and its working fine but recently i got this error-

events.js:141 throw er; // Unhandled 'error' event ^ ResponseTimeoutError: No response was received from the slave in the specified time. at Transaction.handleTimeout (/media/rathore/mydata/project/inspinia_test/.meteor/local/isopacks/jeremybyu_mmodbus/npm/node_modules1/h5.modbus/lib/Transaction.js:452:20) at Timer.listOnTimeout (timers.js:92:15)

Can you help me with this error.

Thanks

[morkai]

Master.read/write/execute() functions return an instance of Transaction which extends Node's EventEmitter. If an object emits an error event and there aren't any listeners registered, an exception will be thrown:

const {EventEmitter} = require('events');

const ee = new EventEmitter();

console.log('hello');
ee.emit('error', new Error());
console.log('bye');

You must attach error event handler to each Transaction:

const t = master.readHoldingRegisters(0x0000, 1);

t.on('error', err => console.error(err.message));

or set the master's suppressTransactionErrors option to true (a noop function will be registered automatically for each created Transaction):

const master = modbus.createMaster({
  suppressTransactionErrors: true
});