6. Function blocks6.1 Manufacturer function blocks6.1.7.8 MR - Master resetGeneraleasyE4 base devices provide 32 master reset functionblocks MR01 to MR32.These function blocks can be used to set the markersand all device outputs to a state of 0.Operating principleDepending on the operating mode set, it is possible to reset either the outputs only, themarkers only or both.To ensure that all data ranges are reliably cleared, the masterreset function block must be the last function block executed inyour program. Otherwise subsequent function blocks mayoverwrite the data ranges again.The function block and its parametersFunction block inputsDescription Note(Bit)EN 1: Activates the function block.T_ Trigger: The reset will be carried out when there is a rising edge.Assigning operandsYou can assign the following operands to the function block inputs that are numericinputs.Operands Value inputsConstant, timer constant xMD, MW, MB - Markers xNB, NW, ND - NET markers xnNB, nND, nND- NET markersNET stations nxIA - Analog input xQA - Analog output xQV - QV - Numeric output of a FB xYou can assign the following operands to the function block inputs that are bit inputs:Operands Bit inputsConstant 0, constant 1 xM – Markers xeasyE4 11/18 MN050009 EN www.eaton.com 393
