# The device connection overload is excessive

**URL:** <https://forum.inductiveautomation.com/t/the-device-connection-overload-is-excessive/82531>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [November 30, 2023, 2:28pm UTC](https://forum.inductiveautomation.com/t/the-device-connection-overload-is-excessive/82531 "2023-11-30T14:28:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![zhao\_zi](https://avatars.discourse-cdn.com/v4/letter/z/3e96dc/32.png) [@zhao\_zi](https://forum.inductiveautomation.com/u/zhao_zi)\
**Post date:** [November 30, 2023, 2:28pm UTC](https://forum.inductiveautomation.com/t/the-device-connection-overload-is-excessive/82531/1 "2023-11-30T14:28:55Z")

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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?

 ![f2a97ae52ed6c1967e1367d286e5763](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/0/50d407bfd7b02f211e7321bf3758bd0d7851ccc7.jpeg)

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [November 30, 2023, 2:43pm UTC](https://forum.inductiveautomation.com/t/the-device-connection-overload-is-excessive/82531/2 "2023-11-30T14:43:54Z")

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Do you work with @vincent.hu ? That exact graphic was posted and this question was asked over here:

> [@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?

Please look at that topic.

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [November 30, 2023, 2:44pm UTC](https://forum.inductiveautomation.com/t/the-device-connection-overload-is-excessive/82531/3 "2023-11-30T14:44:06Z")

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