# \[modbus-flex-getter:Send Request\] Error: Timed out

**URL:** <https://discourse.nodered.org/t/modbus-flex-getter-send-request-error-timed-out/76885>\
**Category:** General\
**Created:** [23 March 2023 23:07 UTC](https://discourse.nodered.org/t/modbus-flex-getter-send-request-error-timed-out/76885 "2023-03-23T23:07:11Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![tobik176](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/tobik176/32/77874_2.png) [@tobik176](https://discourse.nodered.org/u/tobik176)\
**Post date:** [23 March 2023 23:07 UTC](https://discourse.nodered.org/t/modbus-flex-getter-send-request-error-timed-out/76885/1 "2023-03-23T23:07:11Z")

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Hello, I use Node Red via Home Assistant and when I restart HA my modbus connection to my wallbox is lost. I always get this error in Node Red Log:

[modbus-flex-getter:Send Request] Error: Timed out

I have to restart my wallbox to get connection again.

Does someone know how to fix this issue?

Thanks in advance!

BR Tobias

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**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [24 March 2023 08:50 UTC](https://discourse.nodered.org/t/modbus-flex-getter-send-request-error-timed-out/76885/2 "2023-03-24T08:50:36Z")

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1. what is a wallbox?
2. since you are using Home Assistant, you might be better off asking on their forum

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**Author:** ![tobik176](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/tobik176/32/77874_2.png) [@tobik176](https://discourse.nodered.org/u/tobik176)\
**Post date:** [24 March 2023 11:27 UTC](https://discourse.nodered.org/t/modbus-flex-getter-send-request-error-timed-out/76885/3 "2023-03-24T11:27:12Z")

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ah sorry, I am from Austria... with wallbox I mean an ev charging station at home

I asked there too but no solution so far

I will try to set up node red in a separate virtual machine and will check if there is the same problem.  
Maybe this way I will at least see if it's a node red issue or a Home Assistant issue.

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**Author:** ![UnborN](https://avatars.discourse-cdn.com/v4/letter/u/4491bb/32.png) [@UnborN](https://discourse.nodered.org/u/UnborN)\
**Post date:** [24 March 2023 13:21 UTC](https://discourse.nodered.org/t/modbus-flex-getter-send-request-error-timed-out/76885/4 "2023-03-24T13:21:14Z")

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> [@tobik176](#):
>
> I have to restart my wallbox to get connection again.

1. What if you restart Node-red .. does that resume the modbus connection ?  
if not then its the wallbox that is hanging and maybe you are requesting too frequently ?
2. what version of nodejs are you using ? `node --version`  
i think anything higher that v16 is not yet compatible with the Modbus nodes

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**Author:** ![tobik176](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/tobik176/32/77874_2.png) [@tobik176](https://discourse.nodered.org/u/tobik176)\
**Post date:** [24 March 2023 17:06 UTC](https://discourse.nodered.org/t/modbus-flex-getter-send-request-error-timed-out/76885/5 "2023-03-24T17:06:36Z")

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Hi, thanks for your reply

1. unfortunately a restart of Node-red add-on only does not resolve the problem. still no connection.  
I disabled all modbus flows and tried only one send request that I have triggered manually after I restarted Home Assistant and a connection loss. Nothing changed... I don't think it's requesting too frequently.

2. It's version 14.1.0

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [25 March 2023 12:23 UTC](https://discourse.nodered.org/t/modbus-flex-getter-send-request-error-timed-out/76885/6 "2023-03-25T12:23:55Z")

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> [@UnborN](#):
>
> i think anything higher that v16 is not yet compatible with the Modbus nodes

I think that is no longer the case. In the [readme](https://flows.nodered.org/node/node-red-contrib-modbus) it says 16 and 18 are supported from version 5.22 of the node.

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**Author:** ![UnborN](https://avatars.discourse-cdn.com/v4/letter/u/4491bb/32.png) [@UnborN](https://discourse.nodered.org/u/UnborN)\
**Post date:** [25 March 2023 13:19 UTC](https://discourse.nodered.org/t/modbus-flex-getter-send-request-error-timed-out/76885/7 "2023-03-25T13:19:35Z")

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you are right .. i must have been thinking of some older issues that the Modbus node was not recovering its connection. Seems to be resolved with the latest versions of Modbus.

@tobik176 Is the Modbus request TCP or Serial rs485 ? if you try with [QModMaster](https://sourceforge.net/projects/qmodmaster/) do you see the same issues ? Try connecting / disconnecting and reading again.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [24 May 2023 13:20 UTC](https://discourse.nodered.org/t/modbus-flex-getter-send-request-error-timed-out/76885/8 "2023-05-24T13:20:09Z")

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