# Reading Rx3i PLC Arrays via OPC Client

**URL:** <https://forum.inductiveautomation.com/t/reading-rx3i-plc-arrays-via-opc-client/76551>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [July 18, 2023, 8:02pm UTC](https://forum.inductiveautomation.com/t/reading-rx3i-plc-arrays-via-opc-client/76551 "2023-07-18T20:02:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![john.closs1](https://avatars.discourse-cdn.com/v4/letter/j/58f4c7/32.png) [@john.closs1](https://forum.inductiveautomation.com/u/john.closs1)\
**Post date:** [July 18, 2023, 8:02pm UTC](https://forum.inductiveautomation.com/t/reading-rx3i-plc-arrays-via-opc-client/76551/1 "2023-07-18T20:02:35Z")

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Hey All,  
This doesn't make sense why I can read an array of DINTs with a "Double array" Tag Type but not each element of the array "Double" Tag Type. Any thoughts? Please see the attached doc file.

[DINT Array.doc](https://forum.inductiveautomation.com/uploads/short-url/8cGSjf3Elz5qF8rBWlOZyfC7L5s.doc) (117 KB)

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/e/ee1621f93527a0eb77e7130295f00761e397674f.jpeg)

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [July 18, 2023, 8:07pm UTC](https://forum.inductiveautomation.com/t/reading-rx3i-plc-arrays-via-opc-client/76551/2 "2023-07-18T20:07:21Z")

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It's entirely up to the server whether each individual array element is represented as its own Node in the address space, and what the syntax of the NodeId identifying that Node might be.

It appears your server does not put the array elements into the address space as their own Node.

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [July 18, 2023, 8:11pm UTC](https://forum.inductiveautomation.com/t/reading-rx3i-plc-arrays-via-opc-client/76551/3 "2023-07-18T20:11:49Z")

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Also FWIW, "Double" and "Double Array" mean double as in floating point. You probably want "Int Array" or "Long Array".