Library for Building Automation Function Block Descriptions ... - Wago

Lowpass filter (FbFilter_T1)Time referenced behavior:iInput, iOutputiInputiOutputdwT1_In10telSectFunction Description:The input signal “iInput“ is passed through a first order filter and output at“iOutput“. The function block can be used to smooth input signals. This function hasa fixed sampling time of 1 s.The time constant of the filter is defined via the input “dwT1_In10telSec“. The valueof the time constant has to be larger than the sampling rate (e.g. 5 times larger,dwT1_In10telSec = 50).The “bModeOnReset“ input determines the initialization behavior. After a restart theoutput will adopt the value that is set in the initialization option.Note:This function block uses some residual variables having a VAR_RETAINdeclaration.Subject to design changes WAGO Kontakttechnik GmbH & Co. KG Postfach 2880 • D-32385 Minden Tel.: 05 71 / 8 87-0 E-Mail: info@wago.comCopyright © 2009 Hansastr. 27 • D-32423 Minden Fax.: 05 71 / 8 87-169 Web:http://www.wago.com38