6. Function blocks6.1 Manufacturer function blocks6.1.1.7 WT - Weekly timer (WeekTable)easyE4 devices feature a real-time clock with a date and time functionality.When combined with the WT, YT or HW, HY function blocks, this real-time clock makesit possible to implement the functionality of a time switch.GeneralThis function block is an enhanced version of the existing HW -Weekly timer function block.easyE4 base devices provide 32 weekly timers, WT01 throughWT32. WT weekly timers can be used to easily configure recur-ring switching events. The function block was specificallydesigned for implementing switching events that occur at setweekly cycles.It can also take into account different procedures for businessdays and weekends.Operating principleEach of the 32 weekly timers, WT01 through WT032, can be configured with eightswitching events that will be executed at the same time and on any specified day of theweek. The corresponding settings are accurate to the minute and cannot be modified atruntime, i.e., they must be viewed as a set configuration.The function block and its parametersFunction block inputsDescription Note(Bit)EN 1: Activates the function block. The checkbox for theFunction block release by EN isnecessaryparameter must first be enabledAssigning 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 xeasyE4 11/18 MN050009 EN www.eaton.com 215
