# Premium PLC

**URL:** <https://forum.inductiveautomation.com/t/premium-plc/9021>\
**Category:** Archived Topics\
**Created:** [September 7, 2014, 11:58pm UTC](https://forum.inductiveautomation.com/t/premium-plc/9021 "2014-09-07T23:58:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![hazey](https://avatars.discourse-cdn.com/v4/letter/h/a587f6/32.png) [@hazey](https://forum.inductiveautomation.com/u/hazey)\
**Post date:** [September 7, 2014, 11:58pm UTC](https://forum.inductiveautomation.com/t/premium-plc/9021/1 "2014-09-07T23:58:13Z")

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Guys I am trying to read the internal address of a Premium PLC via Modbus TCP OPC-UA. The address is SW49 (the day number) or SW53 (year). The tag diagnostics said it is good but my value is 0. Any ideas?

thanks  
Hazey

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**Author:** ![R.Alamsha](https://avatars.discourse-cdn.com/v4/letter/r/e5b9ba/32.png) [@R.Alamsha](https://forum.inductiveautomation.com/u/R.Alamsha)\
**Post date:** [September 8, 2014, 5:02am UTC](https://forum.inductiveautomation.com/t/premium-plc/9021/2 "2014-09-08T05:02:00Z")

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I have come across this problem and don’t remember how exactly i resolved it. I think, i copied SW registers into another modbus register through the PLC program and then read that value from OPC. Try:)

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**Author:** ![hazey](https://avatars.discourse-cdn.com/v4/letter/h/a587f6/32.png) [@hazey](https://forum.inductiveautomation.com/u/hazey)\
**Post date:** [September 8, 2014, 7:05am UTC](https://forum.inductiveautomation.com/t/premium-plc/9021/3 "2014-09-08T07:05:44Z")

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Thanks I know that would work to copy to MW address but I was trying to emulate a current SCADA that is currently reading the SW address directly.

thanks  
hazey