# Node-Red OPC UA Client :- Read an Integer data from Siemens S7-1500 PLC using OPC UA

**URL:** <https://discourse.nodered.org/t/node-red-opc-ua-client-read-an-integer-data-from-siemens-s7-1500-plc-using-opc-ua/93729>\
**Category:** Hardware\
**Tags:** function-node\
**Created:** [6 December 2024 10:12 UTC](https://discourse.nodered.org/t/node-red-opc-ua-client-read-an-integer-data-from-siemens-s7-1500-plc-using-opc-ua/93729 "2024-12-06T10:12:09Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Akhil](https://avatars.discourse-cdn.com/v4/letter/a/7ab992/32.png) [@Akhil](https://discourse.nodered.org/u/Akhil)\
**Post date:** [6 December 2024 10:12 UTC](https://discourse.nodered.org/t/node-red-opc-ua-client-read-an-integer-data-from-siemens-s7-1500-plc-using-opc-ua/93729/1 "2024-12-06T10:12:09Z")

</div>

I was trying to create a setup with Siemens S7-1500 PLC as OPC UA Server and Node-Red as OPC UA Client.  
Created the Flow and deployed.  
Observed that there was no error and OPC-UA Client status was active reading.  
But the payload was returning as 'Undefined'.

Can you support in troubleshooting

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [4 February 2025 10:12 UTC](https://discourse.nodered.org/t/node-red-opc-ua-client-read-an-integer-data-from-siemens-s7-1500-plc-using-opc-ua/93729/2 "2025-02-04T10:12:23Z")

</div>

This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.