# How to create a UNION of BOOL\[16\] and WORD
**URL:** https://discourse.nodered.org/t/how-to-create-a-union-of-bool-16-and-word/82665
**Category:** General
**Created:** [6 November 2023 22:33 UTC](https://discourse.nodered.org/t/how-to-create-a-union-of-bool-16-and-word/82665 "2023-11-06T22:33:03Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Sysmac](https://discourse.nodered.org/u/Sysmac)
#### Post date: [6 November 2023 22:33 UTC](https://discourse.nodered.org/t/how-to-create-a-union-of-bool-16-and-word/82665/1 "2023-11-06T22:33:03Z")
Hello all,
new to Node-Red.
I would like to create a union connecting an array of bool [16] and a word (hex) then convert the word to a string. Any ideas? so 0000000000001100 -\> 0000000C -\> "0000000C"
Thank you for your time.
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### Author:  [@cymplecy](https://discourse.nodered.org/u/cymplecy)
#### Post date: [7 November 2023 09:14 UTC](https://discourse.nodered.org/t/how-to-create-a-union-of-bool-16-and-word/82665/2 "2023-11-07T09:14:16Z")
Just checking, your 16bit binary number would normally be reduced to a 4digit hex number i.e 000C (as each hex digit represents 4 bits)
Would it it be OK to do that or do you really need "0000000C"?
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [7 November 2023 15:58 UTC](https://discourse.nodered.org/t/how-to-create-a-union-of-bool-16-and-word/82665/3 "2023-11-07T15:58:47Z")
Could you feed your two values into a debug node and show us what you see please. That will ensure there is no confusion. The sort of confusion there may be is whether the WORD value is a String or a Number. Also whether you mean true/false for your bools or 1/0 (which are actually Numbers not booleans).
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### Author:  [@Sysmac](https://discourse.nodered.org/u/Sysmac)
#### Post date: [7 November 2023 22:35 UTC](https://discourse.nodered.org/t/how-to-create-a-union-of-bool-16-and-word/82665/4 "2023-11-07T22:35:43Z")
Sorry for the lack of detail. I am connecting my PC running Node-Red to my RFID controller via serial.
The Omron V640 system has this as the protocol
The 'Node No', 'Command Code' and 'parameter' sections make up a string.
I have already taken care of the preamble and postamble .
I was hoping to use the dashboard tools to have a switch for each page of a tag to read and union those to a DWORD (sorry for my initial mistake) or eight digits then convert to a string for the 8 characters
I have done this in my Omron NX102 PLC already and wanted to offer a solution for any customers using Node-Red versus a PLC. The PLC has a built-in capability to create a union of BOOL[32] and DWORD
So, by assigning a switch to bit 2 and another to bit 3 (designating tag pages 1 & 2 the rest off) this would result in a DORD of 0000000C then convert to a 8 character string to basically CONCAT NodeNo, Command, Parameter
Hope this helps.
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [8 November 2023 09:53 UTC](https://discourse.nodered.org/t/how-to-create-a-union-of-bool-16-and-word/82665/5 "2023-11-08T09:53:24Z")
As I asked,
> [@Colin](#):
>
> Could you feed your two values into a debug node and show us what you see please.
Edit: And tell us what you expect to get out, given that input data.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [7 January 2024 09:54 UTC](https://discourse.nodered.org/t/how-to-create-a-union-of-bool-16-and-word/82665/6 "2024-01-07T09:54:26Z")
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