# Write in a bit with function 16 (Write Multiple Registers)

**URL:** <https://forum.inductiveautomation.com/t/write-in-a-bit-with-function-16-write-multiple-registers/79739>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [September 27, 2023, 5:23pm UTC](https://forum.inductiveautomation.com/t/write-in-a-bit-with-function-16-write-multiple-registers/79739 "2023-09-27T17:23:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Alberto\_AG](https://avatars.discourse-cdn.com/v4/letter/a/c4cdca/32.png) [@Alberto\_AG](https://forum.inductiveautomation.com/u/Alberto_AG)\
**Post date:** [September 27, 2023, 5:23pm UTC](https://forum.inductiveautomation.com/t/write-in-a-bit-with-function-16-write-multiple-registers/79739/1 "2023-09-27T17:23:48Z")

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Hello.

I need to write to **bit 11** of a Modbus memory address. According to the device documentation, this is the definition of the variable:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/e/5e125c0dc3d61561366f2a45c9087dd98fd97904.png)

I have created a tag and defined its "OPC Item Path" as follows. It's right?

_[device]1.HRUI514.11_

Best Regards.

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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:** [September 27, 2023, 5:25pm UTC](https://forum.inductiveautomation.com/t/write-in-a-bit-with-function-16-write-multiple-registers/79739/2 "2023-09-27T17:25:16Z")

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I think you want something like this instead:

```auto
[device]1.HR514.11

```

`HRUI` addresses 2 registers (32 bits, 4 bytes).

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<div class="post-metadata">

**Author:** ![Alberto\_AG](https://avatars.discourse-cdn.com/v4/letter/a/c4cdca/32.png) [@Alberto\_AG](https://forum.inductiveautomation.com/u/Alberto_AG)\
**Post date:** [September 28, 2023, 11:11am UTC](https://forum.inductiveautomation.com/t/write-in-a-bit-with-function-16-write-multiple-registers/79739/3 "2023-09-28T11:11:27Z")

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> [@Alberto\_AG](#):
>
> HRUI514.11

Ok. Thanks.