# Couldnt read data from Autonics ARIO-C-MR using PLC WAGO Edge Controller through Modbus RTU RS485

**URL:** <https://forum.inductiveautomation.com/t/couldnt-read-data-from-autonics-ario-c-mr-using-plc-wago-edge-controller-through-modbus-rtu-rs485/82025>\
**Category:** General Discussion\
**Created:** [November 17, 2023, 5:06am UTC](https://forum.inductiveautomation.com/t/couldnt-read-data-from-autonics-ario-c-mr-using-plc-wago-edge-controller-through-modbus-rtu-rs485/82025 "2023-11-17T05:06:18Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Umair\_Yamin](https://avatars.discourse-cdn.com/v4/letter/u/22d042/32.png) [@Umair\_Yamin](https://forum.inductiveautomation.com/u/Umair_Yamin)\
**Post date:** [November 17, 2023, 5:06am UTC](https://forum.inductiveautomation.com/t/couldnt-read-data-from-autonics-ario-c-mr-using-plc-wago-edge-controller-through-modbus-rtu-rs485/82025/1 "2023-11-17T05:06:19Z")

</div>

Hello, can somebody help me. I try to read data from sensors which are connected to I/O module using PLC WAGO Edge Controller. They are connected through Modbus RTU RS485.

utQuery : typMbQuery := ( bUnitId := 1, // Slaveaddress  
bFunctionCode := 16#04, // read input registers  
IIdentifyObject := myBaseIdentification, // only needed for FC43  
uiReadAddress := 2000, // Startaddress  
uiReadQuantity := 10, // Quantity of wanted registers  
uiWriteAddress := 0, // not needed for FC4  
uiWriteQuantity := 0, // not needed for FC4  
awWriteData := [124(0)] // not needed for FC4  
);

Unfortunately, i couldnt get the data but when i tried using modbus poll, the data can be displayed. Thank you for your help.