# How to read Value Sensor from Modbus RTU

**URL:** <https://discourse.nodered.org/t/how-to-read-value-sensor-from-modbus-rtu/17274>\
**Category:** General\
**Created:** [29 October 2019 11:34 UTC](https://discourse.nodered.org/t/how-to-read-value-sensor-from-modbus-rtu/17274 "2019-10-29T11:34:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Riky\_maarif](https://avatars.discourse-cdn.com/v4/letter/r/74df32/32.png) [@Riky\_maarif](https://discourse.nodered.org/u/Riky_maarif)\
**Post date:** [29 October 2019 11:34 UTC](https://discourse.nodered.org/t/how-to-read-value-sensor-from-modbus-rtu/17274/1 "2019-10-29T11:34:51Z")

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i have trouble when i read value from sensor that modbus RTU, the value that appears does not match the original, as shown in the picture.  
do you have a solution or suggestion?  
or whether it must be converted first.  
thank you

 ![pertanyaan](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/8/83ac32868029e80b2fc161c39d1f37794b059857.jpeg)

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**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [29 October 2019 14:25 UTC](https://discourse.nodered.org/t/how-to-read-value-sensor-from-modbus-rtu/17274/2 "2019-10-29T14:25:16Z")

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well - go on - give us a clue... what should it be ? You are sending it a string. Which I guess you want to be a number - but we have no idea what sort of number.