Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

Inverse Logrithum

Created by: harrisde at: 12/17/2007 6:26 PM (3 Replies)

Rating (1)

Thanks 1

4 Entries

12/17/2007 6:26 PM	Rate (0)
harrisde Member Joined: 12/17/2007 Last visit: 5/20/2023 Posts: 2 Rating: (0)	How do I calculate the inverse commonlogrithum (base 10) in a S7-300 CPU?

Suggestion To thank Quote Answer

12/18/2007 9:21 AM	Rate (0)
Mario Braganca Posts: 124 Rating: (17)	IF log(x) = y EXPD (y) = x ===========> EXPD (y)= 10 to the power y = 10^y You can use SCL. Follow the link and use the Function above EXPD https://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&caller=view&lang=en&siteid=csius&aktprim=0&extranet=standard&viewreg=WW&objid=10805400&treeLang=en You have to buy SCL. Best regards Mario
Mario Braganca Posts: 124 Rating: (17)
Suggestion To thank Quote Answer

12/19/2007 1:58 AM	Rate (1)
Dec Gold Expert Joined: 5/19/2006 Last visit: 8/5/2023 Posts: 547 Rating: (107)	Mario Bragança ... You have to buy SCL. Mario 10 = e^2.30258509310^x= e^{(2.302585093x)} = exp(2.302585093x) In STL: L #IN_PARAM L2.302585 *R // check for OV EXP // check for OV T #OUT_PARAM Dec
	Last edited by: Dec at: 19.12.2007 01:59
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users l-castelli

12/19/2007 3:23 PM	Rate (0)
harrisde Member Joined: 12/17/2007 Last visit: 5/20/2023 Posts: 2 Rating: (0)	Using the natural log to calculate the inverse common log works perfectly. Thanks for the help.

Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Follow us on