https://controlwiki.com/index.php?title=PLC_Archive:Derivative_Calculation&action=history Revision history for this page on the wiki en MediaWiki 1.15.1 Mon, 27 Apr 2026 18:35:04 GMT https://controlwiki.com/index.php?title=PLC_Archive:Derivative_Calculation&diff=537&oldid=prev <p>Created page with &#39;{{PLC Archive | page_title=Derivative Calculation | author_name=Simone Stefani | program_filename=derivate.pdf | abstract=This function calculates the 1st derivative of [Input_va…&#39;</p> <p><b>New page</b></p><div>{{PLC Archive<br /> | page_title=Derivative Calculation<br /> | author_name=Simone Stefani<br /> | program_filename=derivate.pdf<br /> | abstract=This function calculates the 1st derivative of [Input_value]. The derivative is calculated on 20 samples of [Input_value] - the samples are taken each time [CLK] is TRUE. The output value is the sum of the 1st 10 samples with 2nd 10 samples.<br /> <br /> Parameters:<br /> *[Input_value]: Value to derive <br /> *[Reset]: This command resets the act derive value. The calculation restarts when all the items of samples array are refreshed. <br /> *[Derive_spl_CMD]: Timing step. The samples are taken when [Derive_spl_CMD] = TRUE <br /> *[Derive_value]: Derivated output value<br /> *[Enable]: This output is energized when the calculation of act value is finished<br /> *[Samples]: Samples container.<br /> *[Nr_samples]: # of samples to take for calculation <br /> *[Derive_calc_ON]: System variable<br /> *[Nr_of_shf]: System variable<br /> *[Loop]: System variable<br /> *[Index]: System variable<br /> *[Prev_sum]: System variable<br /> *[Next_sum]: System variable<br /> *[Dummy_bit_1]: System variable<br /> *[Calc_ON]: System variable<br /> *[Init_end]: System variable<br /> <br /> }}</div> Mon, 21 Sep 2009 02:41:28 GMT Cwiki https://controlwiki.com/index.php?title=Talk:PLC_Archive:Derivative_Calculation