User Guide - Eurotherm Ltda

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nanodac RECORDER/CONTROLLER: USER GUIDE6.3.2 Wiring Editor Operating Details (Cont.)FUNCTION BLOCKSA Function Block is an algorithm which may be wired to and from other function blocks to make a controlstrategy. Each function block has inputs and outputs. Any parameter may be wired from, but only parametersthat are alterable in Operator Mode may we wired to. A function block includes any parameters that areneeded to configure or operate the algorithm. The inputs and outputs which are considered to be of mostuse are always shown. In most cases all of these need to be wired before the block can perform a useful task.If a function block is not faded in the tree (left hand pane) it can be dragged onto the diagram. The blockcan be dragged around the diagram using the mouse.A Channel block is shown below as an example. When block type information is alterable (as in this case)click on the box with the down arrow in it to display a dialogue box allowing the value to be edited.Down arrowPosition inexecution orderFigure 6.3.2a Function block exampleIf it is required to wire from a parameter, which is not shown as a recommended output, click onthe ‘Click to Select Output’ icon in the bottom right hand corner to display a full list of parametersin the block (figure 6.3.2c, below). Click on one of these to start a wire.FUNCTION BLOCK CONTEXT MENURight click in the function block to display the context menu.Function block view Displays a list of parameters associated with the functionblock. ‘Hidden’ parameters can be displayed byde-selecting ‘Hide Parameters and Lists when not Relevantin the options menu ‘Parameter availability setting...’itemRe-Route wires Redraws all wiring associated with the function block.Re-route input wires Redraws all input wiring associated with the functionblockRe-route output wires Redraws all output wiring associated with the functionblock.Show wiring using tagsWires are not drawn, but their start and end destinationsare indicated by tags instead. Reduces wire clutterin diagrams where source and destination arewidely separated.Hovering the cursor over the tag shows both its sourceand destination parameters and their valuesFigure 6.3.2b Function blockcontext menuPage 264HA030554Issue 7 Nov 12
nanodac RECORDER/CONTROLLER: USER GUIDE6.3.2 Wiring Editor Operating Details (Cont.)FUNCTION BLOCK CONTEXT MENU (Cont.)Hide unwanted connectionsCauses the display to include only wired items.CutAllows one or more selected items to be moved to the Clipboard ready for pasting intoanother diagram or compound, or for use in a Watch window, or OPC scope. The originalitems are greyed out, and function blocks and wires are shown dashed until nextdownload, after which they are removed from the diagram. Short cut = +.Cut operations carried out since the last download can be ‘undone’ by using the ‘Undo’tool bar icon, by selecting ‘Undelete’ or by using the short cut +.CopyAllows one or more selected items to be copied to the Clipboard ready for pasting intoanother diagram or compound, or for use in a Watch window, or OPC scope. The originalitems remain in the current wiring diagram. Short cut = +. If items arepasted to the same diagram from which they were copied, the items will be replicatedwith different block instances. Should this result in more instances of a block than areavailable, an error display appears showing details of which items couldn’t be copied.Paste Copies items from the Clipboard to the current wiring diagram. Short cut =+. If items are pasted to the same diagram from which they were copied, theitems will be replicated with different block instances. Should this result in more instancesof a block than are available, a Paste error display appears showing details ofthose items which could not be copied.DeleteMarks all selected items for deletion. Such items are shown dashed until next download,after which they are removed from the diagram. Short cut = .UndeleteReverses ‘Delete’ and ‘Cut’ operations carried out on selected item(s) since the lastdownload.Bring to Front Brings selected items to the front of the diagram.Push to Back Sends the selected items to the back of the diagram.Edit Parameter Value...This menu item is active if the cursor is hovering over an editable parameter. Selectingthis menu item causes a pop-up window to appear, which allows the user to edit the parametervalue.Parameter Properties This menu item is active if the cursor is hovering over an editable parameter. Selectingthis menu item causes a pop-up window to appear, which allows the user to view theparameter properties, and also, to view the parameter Help (by clicking on the ‘Help’tab).Parameter Help Produces Parameter Properties and Help information for the selected function block orparameter, depending on the hover position of the cursor, when the right-click occurs.HA030554Issue 7 Nov 12Page 265
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nanodacUser Guidenanodac recorder/c
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User Guide - Eurotherm Ltda

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