# Serial input node stops reading data
**URL:** https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451
**Category:** General
**Created:** [23 October 2022 08:15 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451 "2022-10-23T08:15:20Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@XYZ](https://discourse.nodered.org/u/XYZ)
#### Post date: [23 October 2022 08:15 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/1 "2022-10-23T08:15:20Z")
I am using a serial input node. The node just stops after approximately around 4-5 minutes. I am using the function:
const d = Date.now()
function getData()
{
return msg.payload
}
const tmp =[{series: ["US1"],data: [],labels: [""]}]
for(let z = 0; z \< 51; z++)
{
tmp[0].data[0].push({x:(d+z),y:getData()})
}
msg.payload = tmp
return msg;
Please help me.
---
### Author:  [@bakman2](https://discourse.nodered.org/u/bakman2)
#### Post date: [23 October 2022 08:22 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/2 "2022-10-23T08:22:05Z")
What do you mean with "just stops" ? Are you outputting into the debug window ? because there is only a limited amount of data it will display - which could make it appear that it just stops.
---
### Author:  [@XYZ](https://discourse.nodered.org/u/XYZ)
#### Post date: [23 October 2022 08:23 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/3 "2022-10-23T08:23:45Z")
Yeah i am checking with debug and chart node. I mean no data is received from the node after 4-5 minutes. I checked with other serial terminal, it is coming.
---
### Author:  [@dceejay](https://discourse.nodered.org/u/dceejay)
#### Post date: [23 October 2022 08:44 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/4 "2022-10-23T08:44:55Z")
Why are you building an array for the data when it is live data coming in ? - Why not just send the numeric payload from the serial input as a payload direct to the chart - the chart will add the timestamp - and you can set it to limit it to 50 reading etc.
---
### Author:  [@XYZ](https://discourse.nodered.org/u/XYZ)
#### Post date: [23 October 2022 08:48 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/5 "2022-10-23T08:48:40Z")
How do i limit it to 50 at a time. I have data coming around 50 per sec. Shall i limit using delay node or is there something in the chart node itself ?
Why is serial node stopping and not receiving any data ?
---
### Author:  [@dceejay](https://discourse.nodered.org/u/dceejay)
#### Post date: [23 October 2022 08:52 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/6 "2022-10-23T08:52:14Z")
I would use either the delay node in rate limit mode - set to drop intermediate messages - or use the smooth node (to create an average) and tick the reduce option to only emit the value every x samples.
---
### Author:  [@XYZ](https://discourse.nodered.org/u/XYZ)
#### Post date: [23 October 2022 08:54 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/7 "2022-10-23T08:54:19Z")
That is fine. I used delay node to limit too.
That too didnt work.
Waht about serial input node ? It is not showing any data.
---
### Author:  [@dceejay](https://discourse.nodered.org/u/dceejay)
#### Post date: [23 October 2022 08:56 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/8 "2022-10-23T08:56:30Z")
Sorry - not sure what you mean - in what way doesn't it work ?
If you aren't receiving anything from the serial node then indeed nothing further will work.
Add a debug directly to the output and see what it is receiving.
---
### Author:  [@XYZ](https://discourse.nodered.org/u/XYZ)
#### Post date: [23 October 2022 08:59 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/9 "2022-10-23T08:59:23Z")
I mean the serial node stops showing anything after 4-5 minutes in the debug node.
I could see the data coming with other serial terminal software (to see whether data is coming on the COM port or not)
---
### Author:  [@dceejay](https://discourse.nodered.org/u/dceejay)
#### Post date: [23 October 2022 09:13 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/10 "2022-10-23T09:13:26Z")
Does it do that if you only have the debug attached and not the rest of the flow (charts etc)
---
### Author:  [@XYZ](https://discourse.nodered.org/u/XYZ)
#### Post date: [23 October 2022 09:15 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/11 "2022-10-23T09:15:22Z")
No it doesnt work with or without the chart connected.
It shows "connected", but no data after 4-5 minutes
---
### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [23 October 2022 09:31 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/12 "2022-10-23T09:31:00Z")
> [@XYZ](#):
>
> I could see the data coming with other serial terminal software
Do you mean you have node-red and another terminal software package both connected to the same COM port. I thought that was not allowed.
---
### Author:  [@XYZ](https://discourse.nodered.org/u/XYZ)
#### Post date: [23 October 2022 09:34 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/13 "2022-10-23T09:34:26Z")
No, not at the same time. one at a time.
---
### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [23 October 2022 09:40 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/14 "2022-10-23T09:40:29Z")
Select the serial node and Export it, then paste it here. Use the `` button at the top of the forum entry window when pasting it.
Also what version of node-red, node.js and the serial node are you using?
---
### Author:  [@XYZ](https://discourse.nodered.org/u/XYZ)
#### Post date: [23 October 2022 09:44 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/15 "2022-10-23T09:44:34Z")
```auto
[
{
"id": "d4b06b4c7251a85a",
"type": "serial in",
"z": "0d2c3513d6cb6705",
"name": "",
"serial": "61527f176c118dc6",
"x": 310,
"y": 200,
"wires": [
[
"6997f8a061f3fba0"
]
]
},
{
"id": "61527f176c118dc6",
"type": "serial-port",
"z": "0d2c3513d6cb6705",
"serialport": "COM6",
"serialbaud": "9600",
"databits": "8",
"parity": "none",
"stopbits": "1",
"waitfor": "",
"dtr": "none",
"rts": "none",
"cts": "none",
"dsr": "none",
"newline": "\\n",
"bin": "false",
"out": "char",
"addchar": "",
"responsetimeout": ""
}
]
```
This is the flow.
NodeRED version: v2.0.5
Node.js version: v12.16.2
---
### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [23 October 2022 10:17 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/16 "2022-10-23T10:17:05Z")
Please paste the flow directly here using the `` button.
Further explanation in this canned reply:
In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote `````)
````auto
```
code goes here
```
````
You can edit and correct your post by clicking the pencil ✏ icon.
See this post for more details - [How to share code or flow json](https://discourse.nodered.org/t/how-to-share-code-or-flow-json/506)
---
### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [23 October 2022 10:22 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/17 "2022-10-23T10:22:05Z")
Set a 1 second timeout in the serial node, so that if no newline character is received it will still output something.
---
### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [25 October 2022 14:02 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/19 "2022-10-25T14:02:24Z")
Did that help at all?
---
### Author:  [@XYZ](https://discourse.nodered.org/u/XYZ)
#### Post date: [25 October 2022 14:13 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/20 "2022-10-25T14:13:52Z")
No Colin. After sometime, the serial in node shows no data. It has something to do with NodeRED. I disabled the serial node and checked with putty, got the data.
---
### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [25 October 2022 14:17 UTC](https://discourse.nodered.org/t/serial-input-node-stops-reading-data/69451/21 "2022-10-25T14:17:42Z")
Stop node red and start it again in a terminal. Wait till it stops receiving and copy/paste the terminal output here, from the start.
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