# How adrress bit from a siemens DB

**URL:** <https://forum.inductiveautomation.com/t/how-adrress-bit-from-a-siemens-db/11912>\
**Category:** Ignition\
**Created:** [July 8, 2016, 10:35pm UTC](https://forum.inductiveautomation.com/t/how-adrress-bit-from-a-siemens-db/11912 "2016-07-08T22:35:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sisecsl](https://avatars.discourse-cdn.com/v4/letter/s/47e85d/32.png) [@sisecsl](https://forum.inductiveautomation.com/u/sisecsl)\
**Post date:** [July 8, 2016, 10:35pm UTC](https://forum.inductiveautomation.com/t/how-adrress-bit-from-a-siemens-db/11912/1 "2016-07-08T22:35:22Z")

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I have a PLC siemens S7-1512, i can read all real DB tags, but i have a db only with booleans and it’s not possible read it. I try with DB500,x1.1 but don’t Works.  
Some ideas?

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**Author:** ![P11](https://avatars.discourse-cdn.com/v4/letter/p/a9adbd/32.png) [@P11](https://forum.inductiveautomation.com/u/P11)\
**Post date:** [August 12, 2016, 7:00am UTC](https://forum.inductiveautomation.com/t/how-adrress-bit-from-a-siemens-db/11912/2 "2016-08-12T07:00:46Z")

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The only idea I can imagine, it’s to try with an expression tag, with the function getBit. But It is strange that you don’t have success in take the data in the way you described