# Can Ignition's Allen-Bradley SLC driver read complete data block as an array?

**URL:** <https://forum.inductiveautomation.com/t/can-ignitions-allen-bradley-slc-driver-read-complete-data-block-as-an-array/79154>\
**Category:** Ignition\
**Created:** [September 14, 2023, 12:54pm UTC](https://forum.inductiveautomation.com/t/can-ignitions-allen-bradley-slc-driver-read-complete-data-block-as-an-array/79154 "2023-09-14T12:54:57Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Transistor](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/transistor/32/3380_2.png) [@Transistor](https://forum.inductiveautomation.com/u/Transistor)\
**Post date:** [September 14, 2023, 12:54pm UTC](https://forum.inductiveautomation.com/t/can-ignitions-allen-bradley-slc-driver-read-complete-data-block-as-an-array/79154/1 "2023-09-14T12:54:57Z")

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I'm converting an old application to Ignition. Most of the data is stored in integer format in N11, N200, etc.

Do I need to create a tag for N200.0, N200.1, etc. or is there a means to read the whole lot as one array. (I suspect not.)

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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:** [September 14, 2023, 12:56pm UTC](https://forum.inductiveautomation.com/t/can-ignitions-allen-bradley-slc-driver-read-complete-data-block-as-an-array/79154/2 "2023-09-14T12:56:03Z")

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Not, and it would be N200[0], N200[1], et cetera. (The driver will read big chunks of the array together after optimization, I believe, similar to reading Modbus with gap spanning.)

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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:** [September 14, 2023, 1:08pm UTC](https://forum.inductiveautomation.com/t/can-ignitions-allen-bradley-slc-driver-read-complete-data-block-as-an-array/79154/3 "2023-09-14T13:08:52Z")

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> [@Transistor](#):
>
> Do I need to create a tag for N200.0, N200.1, etc. or is there a means to read the whole lot as one array. (I suspect not.)

This is bit addressing syntax, not to be confused with any kind of array syntax that doesn't exist.

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**Author:** ![Transistor](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/transistor/32/3380_2.png) [@Transistor](https://forum.inductiveautomation.com/u/Transistor)\
**Post date:** [September 14, 2023, 2:07pm UTC](https://forum.inductiveautomation.com/t/can-ignitions-allen-bradley-slc-driver-read-complete-data-block-as-an-array/79154/4 "2023-09-14T14:07:33Z")

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Thank you both.