node-modbus-serial

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Hi, I am trying to implement Modbus RTU over TCP. I am using connectTcpRTUBuffered and getting TransactionTimedOutError and PortNotOpenError. Below is the code snippet and error log. Referred to, https://github.com/yaacov/node-modbus-serial/issues/117...

sameekshamishra

Port not open error on TCP connection

5

 hi, I am getting a port not found error on the TCP connection. actually, we are fetching plc data every 1 minute. the issue is coming after 6-8 hours....

Naim-Bijapure

[Help] Modbus Rerial Slave

2

i want to use this library as a slave. it listens from the server for FCs and responds. please give me an example to do it.

anvv0202

## Introduction We are using the modbus-serial library with NodeJS version 16 on an edge gateway to read and write some data to some Modbus clients. This works good except...

Ulf-B

Unable to connect TCP

1

Hi. I tried the code as it is mentioned in the example: // create an empty modbus client const ModbusRTU = require("modbus-serial"); const client = new ModbusRTU(); // open connection...

piyushparag

Worker API TS declaration

1

Please add Worker API in TS declaration ModbusRTU.d.ts

arktos-mike

writeCoil doesn't work while not giving any error

3

This code block doesn't work while it is not giving any error. I am able to write to this coil with the same IP adress, port and coil adress on...

bkorumaz

bug: Sometimes close callback isn't called (Modbus TCP)

7

I'm writing some test suites of my package and I have this bug, if I inpect modbus-serial I can see that [here](https://github.com/yaacov/node-modbus-serial/blob/master/ports/tcpport.js#L145) the callback is assigned correctly but when I...

robertsLando

Modbus/TCP: If the connection is broken, an unhandled promise rejection error is generated, and it can't be caught

4

If I disconnect the modbus/tcp device from the network, to test what happens, I am getting the following error: (node:25171) UnhandledPromiseRejectionWarning: Error: TCP Connection Timed Out at Socket. (/home/pi/vision/node_modules/modbus-serial/ports/tcpport.js:111:24) at...

ryangriggs

Modbus Serial communication is very unreliably working on my device

2

It sometimes reads the data sometime, it hangs to read from the bus and write to the Bus. I get a lot of CRC error while reading and writing to...

acroknacks