# Allen Bradley Compactlogix firmware v21

**URL:** <https://forum.inductiveautomation.com/t/allen-bradley-compactlogix-firmware-v21/7591>\
**Category:** Archived Topics\
**Created:** [November 20, 2013, 7:06am UTC](https://forum.inductiveautomation.com/t/allen-bradley-compactlogix-firmware-v21/7591 "2013-11-20T07:06:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![howarddpsg](https://avatars.discourse-cdn.com/v4/letter/h/ecc23a/32.png) [@howarddpsg](https://forum.inductiveautomation.com/u/howarddpsg)\
**Post date:** [November 20, 2013, 7:06am UTC](https://forum.inductiveautomation.com/t/allen-bradley-compactlogix-firmware-v21/7591/1 "2013-11-20T07:06:48Z")

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anyone working on a fix for firmware version 21? i can connect with the v20 and earlier opc but all we can do is see the tags. the value is always null. I appreciate any help.

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**Author:** ![Kyle\_Chase](https://avatars.discourse-cdn.com/v4/letter/k/9de0a6/32.png) [@Kyle\_Chase](https://forum.inductiveautomation.com/u/Kyle_Chase)\
**Post date:** [November 20, 2013, 8:06am UTC](https://forum.inductiveautomation.com/t/allen-bradley-compactlogix-firmware-v21/7591/2 "2013-11-20T08:06:53Z")

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Slated for 7.7 I think

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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:** [November 20, 2013, 3:19pm UTC](https://forum.inductiveautomation.com/t/allen-bradley-compactlogix-firmware-v21/7591/3 "2013-11-20T15:19:47Z")

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Yep.