# How to access the data on 750-650 RS 232 INTERFACE USING 750-315 MODBUS RTU COUPLER USING MODBUS COMMAND

**URL:** <https://www.wago.community/t/how-to-access-the-data-on-750-650-rs-232-interface-using-750-315-modbus-rtu-coupler-using-modbus-command/2299>\
**Category:** Hardware and Linux\
**Tags:** how-to\
**Created:** [September 18, 2025, 9:16am UTC](https://www.wago.community/t/how-to-access-the-data-on-750-650-rs-232-interface-using-750-315-modbus-rtu-coupler-using-modbus-command/2299 "2025-09-18T09:16:59Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sayedbilal](https://avatars.discourse-cdn.com/v4/letter/s/ee7513/32.png) [@Sayedbilal](https://www.wago.community/u/Sayedbilal)\
**Post date:** [September 18, 2025, 9:16am UTC](https://www.wago.community/t/how-to-access-the-data-on-750-650-rs-232-interface-using-750-315-modbus-rtu-coupler-using-modbus-command/2299/1 "2025-09-18T09:16:59Z")

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I have a 750-315 modbus coupler and I use c# wpf program in PC as master I want to collect rs 232 data from a device so I plan to connect 750-650 rs 232 interface. But how to get data via modbus rtu. Please help.

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**Author:** ![Thruser](https://avatars.discourse-cdn.com/v4/letter/t/d26b3c/32.png) [@Thruser](https://www.wago.community/u/Thruser)\
**Post date:** [September 19, 2025, 6:09am UTC](https://www.wago.community/t/how-to-access-the-data-on-750-650-rs-232-interface-using-750-315-modbus-rtu-coupler-using-modbus-command/2299/2 "2025-09-19T06:09:51Z")

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Hi, may this will help. At least for starting, the procedure should be similar.

> [@Wago Moduler Type Energy Analyser Modbus Data Read from 3rd party Modbus Master](https://www.wago.community/t/wago-moduler-type-energy-analyser-modbus-data-read-from-3rd-party-modbus-master/1603):
>
> Hello all, I have experienced to read the data from 494 module under 750-362 modbus coupler from 3rd party modbus master sw/device. In my case, ı have polled the module from Modbus Poll. But if you read the document ı have shared, you will understand the method how you can implement it for another master devices. This only done with modbus but you can use same method for different special modules / couplers. [WAGO Moduler Type Analyser Read from 3rd Party Device.pdf](https://www.wago.community/uploads/short-url/bAlRRQMMcI9bQSkfhXNcKqjTqQU.pdf) (742.7 KB) Regards,