<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1431933564450_529829">Hello,</div><div id="yui_3_16_0_1_1431933564450_529888"><br></div><div id="yui_3_16_0_1_1431933564450_529831">I am new to SciLab & Xcos and already love the capabilities of the tool.<br></div><div id="yui_3_16_0_1_1431933564450_529783"><br></div><div id="yui_3_16_0_1_1431933564450_529853" dir="ltr">I have built a model in Xcos and would like to add a time-varying value to it. I believe the Sigbuilder block is the best approach but I cannot seem to get it to work. I don't know what to put as an input into the command port so that the desired value is summed into the model from the start of the simulation. I have looked at the help documentation on the site and what I can find on the web but without any luck so far. Can someone please provide some insight or an example on how I should implement the Sigbuilder block? <br></div><div id="yui_3_16_0_1_1431933564450_529901" dir="ltr"><br></div><div dir="ltr">Thanks,</div><div id="yui_3_16_0_1_1431933564450_529904" dir="ltr"><br></div><div id="yui_3_16_0_1_1431933564450_529906" dir="ltr">Mike<br></div></div></body></html>