# Read/Write ContolLogix float arrays to Ignition 7.9

**URL:** <https://forum.inductiveautomation.com/t/read-write-contollogix-float-arrays-to-ignition-7-9/96738>\
**Category:** Ignition\
**Tags:** rockwell, ignition79\
**Created:** [October 2, 2024, 8:50pm UTC](https://forum.inductiveautomation.com/t/read-write-contollogix-float-arrays-to-ignition-7-9/96738 "2024-10-02T20:50:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![yidir](https://avatars.discourse-cdn.com/v4/letter/y/35a633/32.png) [@yidir](https://forum.inductiveautomation.com/u/yidir)\
**Post date:** [October 2, 2024, 8:50pm UTC](https://forum.inductiveautomation.com/t/read-write-contollogix-float-arrays-to-ignition-7-9/96738/1 "2024-10-02T20:50:48Z")

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I'm trying to address float arrays from a ControlLogix to ignition 7.9  
The Boolean array works fine. the float one doesn't read.

![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/9/c98ba8333f46b3cae6c6fe73671e1f125df77be2.png)

Is this config correct?

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/4/a4ddbba1e6c0e3c8d9a2c50f7babbc7030a176ac.png)

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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:** [October 2, 2024, 8:56pm UTC](https://forum.inductiveautomation.com/t/read-write-contollogix-float-arrays-to-ignition-7-9/96738/2 "2024-10-02T20:56:55Z")

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The driver doesn't expose anything as arrays.

In `AuxBits` you are casting some non-array type on the OPC side into a BooleanArray on the Ignition tag side.

If you have an array of floats in the PLC you will need a tag per element.

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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:** [October 2, 2024, 8:57pm UTC](https://forum.inductiveautomation.com/t/read-write-contollogix-float-arrays-to-ignition-7-9/96738/3 "2024-10-02T20:57:50Z")

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If you are going to be upgrading to v8.1 (and you should), my alternate driver supports single-dimensional numeric arrays for OPC tags.