# Why I am facing an issue where writing to the PLC tags happens quickly, but reading the tag values has a very big delay **URL:** \ **Category:** Ignition\ **Tags:** perspective\ **Created:** [December 4, 2025, 12:11pm UTC](https://forum.inductiveautomation.com/t/why-i-am-facing-an-issue-where-writing-to-the-plc-tags-happens-quickly-but-reading-the-tag-values-has-a-very-big-delay/112613 "2025-12-04T12:11:46Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Samuel\_Sueur](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@Samuel\_Sueur](https://forum.inductiveautomation.com/u/Samuel_Sueur)\ **Post date:** [December 4, 2025, 12:16pm UTC](https://forum.inductiveautomation.com/t/why-i-am-facing-an-issue-where-writing-to-the-plc-tags-happens-quickly-but-reading-the-tag-values-has-a-very-big-delay/112613/2 "2025-12-04T12:16:59Z")
Wow, your device just can’t keep up with what you are asking. It shows that you are sending 2003 requests **every second.** I think your system needs a massive rework, are you sure you need this many tags sampled at 1second ?? Reduce the number of tags, especially if you don’t use them, increase your sample rate, I’m sure you have tags coming from this PLC that do not need to be refreshed every second… Have a look at this topic as well for some information : > [@The device connection overload is excessive](https://forum.inductiveautomation.com/t/the-device-connection-overload-is-excessive/82521): > > In the project, I need to connect the new Siemens 1500plc to read and write data. In this process, I encountered some problems. I only added 372 points, but overload reached 161% and the writing delay reached 3129ms, which was the result after I increased the polling rate to 1200ms. Normally 372 points wouldn't be such a high overload, would it? What are the factors that affect overload? What should I do next? I’ll the experts guide you on the proper steps to take, but expect massive rework on your side. --- _[View the full topic](https://forum.inductiveautomation.com/t/why-i-am-facing-an-issue-where-writing-to-the-plc-tags-happens-quickly-but-reading-the-tag-values-has-a-very-big-delay/112613)._