# MODBUS Read status relay of DDC to IOT 2050
**URL:** https://discourse.nodered.org/t/modbus-read-status-relay-of-ddc-to-iot-2050/88238
**Category:** General
**Created:** [24 May 2024 15:47 UTC](https://discourse.nodered.org/t/modbus-read-status-relay-of-ddc-to-iot-2050/88238 "2024-05-24T15:47:30Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@minnguyen999](https://discourse.nodered.org/u/minnguyen999)
#### Post date: [24 May 2024 15:47 UTC](https://discourse.nodered.org/t/modbus-read-status-relay-of-ddc-to-iot-2050/88238/1 "2024-05-24T15:47:30Z")
I have a project.
Read status RELAY of DDC to IOT 2050. when I read it, the value is error, not 1 or 0. Even though I wrote a convert float 32 function but it still doesn't work. Can anyone help me write a convert function?
The data type of RELAY is float swapp 32.
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### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [24 May 2024 16:04 UTC](https://discourse.nodered.org/t/modbus-read-status-relay-of-ddc-to-iot-2050/88238/2 "2024-05-24T16:04:12Z")
> [@minnguyen999](#):
>
> Can anyone help me write a convert function?
You can simply use [https://flows.nodered.org/node/node-red-contrib-buffer-parser](https://flows.nodered.org/node/node-red-contrib-buffer-parser)
It is designed for this kind of task.
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### Author:  [@minnguyen999](https://discourse.nodered.org/u/minnguyen999)
#### Post date: [24 May 2024 16:09 UTC](https://discourse.nodered.org/t/modbus-read-status-relay-of-ddc-to-iot-2050/88238/3 "2024-05-24T16:09:34Z")
can you help me tomorrow?
Tomorrow, I will send you the debug error reading image.
See you soon
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### Author:  [@minnguyen999](https://discourse.nodered.org/u/minnguyen999)
#### Post date: [25 May 2024 02:09 UTC](https://discourse.nodered.org/t/modbus-read-status-relay-of-ddc-to-iot-2050/88238/4 "2024-05-25T02:09:32Z")
what about int value?
buffer-parsse can?
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### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [25 May 2024 10:04 UTC](https://discourse.nodered.org/t/modbus-read-status-relay-of-ddc-to-iot-2050/88238/5 "2024-05-25T10:04:29Z")
> [@minnguyen999](#):
>
> what about int value?
Yes, int8, uint8, int16, uint16, int32, uint32 - pretty sure all bases are covered!
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### Author:  [@minnguyen999](https://discourse.nodered.org/u/minnguyen999)
#### Post date: [29 May 2024 04:38 UTC](https://discourse.nodered.org/t/modbus-read-status-relay-of-ddc-to-iot-2050/88238/6 "2024-05-29T04:38:28Z")
I fixed it.
Thank you