# Making array and reading single values
**URL:** https://discourse.nodered.org/t/making-array-and-reading-single-values/32391
**Category:** General
**Created:** [3 September 2020 09:32 UTC](https://discourse.nodered.org/t/making-array-and-reading-single-values/32391 "2020-09-03T09:32:28Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@vishalk](https://discourse.nodered.org/u/vishalk)
#### Post date: [3 September 2020 09:32 UTC](https://discourse.nodered.org/t/making-array-and-reading-single-values/32391/1 "2020-09-03T09:32:28Z")
Hello,
I am little new to node red.I dont know javascript
I want to read 8 bits from PLC and the for each single bit status is to be shown on LED display.
But I dont know how to do it. picture shows the exmaple how its to be formed
Please tell what function should I write to store all bits in a array and then read each bits
Thanking you
Vishal
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [3 September 2020 10:34 UTC](https://discourse.nodered.org/t/making-array-and-reading-single-values/32391/2 "2020-09-03T10:34:19Z")
Add a debug node showing us what you are getting from the OPC node and tell us what you want the LEDs to show for that data.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [2 November 2020 10:34 UTC](https://discourse.nodered.org/t/making-array-and-reading-single-values/32391/3 "2020-11-02T10:34:39Z")
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