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

Constant light control for 0 – 10 V (FbConstantLightControl)Graphical display:Function description:The function block enables constant light to be controlled automatically in connectionwith a light sensor. The current brightness value is polled via the “wRealValue“ input.A positive edge at the „xToggle“ input switches the control and the lights on or off,depending on their current states.Adaptating the measured value “wRealValue“ to the measuring range of the lightsensor is done via the “wMaxMeasuredValueSensor“ input. The determined realvalue is compared with the setpoint value “wSetpValue“. The lighting is dimmed ifthese two values differ from each other.By pushing the input buttons “xOn_and_Brighter“ or “xOff_and_Darker“ longer, thesetpoint light intensity at input “wSetpValue“ can be shifted up or down. This is onlypossible when the input signal ”xSetpValueShifting“ is TRUE.The lighting is switched on or off by briefly pushing (briefer than the”dwButtonShort_10tel_s“ time) the input buttons ”xOn_and_Brighter“ or”xOff_and_Darker“. When switching on, the light intensity is adjusted to the setpointvalue “wSetpValue“.If the input “xMemo“ is TRUE, the previously adjusted setpoint value “wSetpValue“will be memorised after switching off and recalled when switching on again.If this memory function is not required, the signal at input ”xMemo“ is set to FALSE. Inthis case, the value “wBasicSetpValue“ will be set for “wSetpValue“, when switchingthe lighting on.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.com20