Bill of Materials and Printing tutorial on proteus-7.8

Bill of Materials and Printing tutorial on proteus-7.8

 

Bill of Materials

Constructing a Bill of Materials is an often necessary but frustrating task at the end of the schematic design phase. Fortunately, ISIS provides a completely flexible scheme which allows you to include as much or as little information as required.

Let’s start by looking at the default Bill of Materials Output. Goto the Tools menu, Bill of Materials command and then select the BOM format that you want.

Launching the Bill Of Materials
Launching the Bill Of Materials

The section at the top of the report is taken from the Design Properties Command, which you can find on the Design Menu and modify accordingly.

Edit Design Properties dialogue form
Edit Design Properties dialogue form

Items in the BOM are grouped by reference prefix. For example, all resistors have a prefix of ‘R’, capacitors a prefix of ‘C’ and IC’s a prefix of ‘U’. It follows that new categories can be created by assigning the part type a new reference prefix. This is done at the point where we create a new device and is discussed in the Appendix to the tutorial.

The CSV (Comma Separated Variable) outputs are designed for import into Microsoft Excel™, with the full CSV output listing each item individually and the compact CSV output listing like items on a single line.

The columns output in the BOM script are simply properties of the components which have been specified for output via the System Menu – Set BOM Scripts command. In order to add more information to the BOM we therefore need to add the information to the components (if it doesn’t already exist) and then tell ISIS to output the information. Let’s look at a couple of examples.

To add a column to the BOM output

  • Launch the Set BOM Scripts command from the System menu.
    Bill of Materials
  • Select the type of BOM output from the combo box at the top of the dialogue form.
    Bill of Materials
  • Add a column by selecting the option at the bottom right of the dialogue form.
    Bill of Materials
  • The name of the property we want in this case is CODE. There are various other customization options, all of which have context sensitive help associated with them.
    Bill of Materials
  • Exit the main dialogue form and invoke the appropriate BOM output from the Tools Menu.
    Tools Menu

Now that we know how to expose existing properties, lets see how you can overwrite these and/or add your own information. You can add properties to components either on the design itself (changes apply only to the current design) or to the master set of components (changes apply to all future designs). We’ll look at the first case here and cover the second in the section on Creating New Devices in the documentation Appendix.

ISIS contains a  dedicated tool – known as the Property Assignment Tool (PAT) – for applying properties to objects on the design. This is discussed in detail in the reference manual (Help Menu- ISIS Help) but we’ll introduce the tool as a means to adding properties that we want to appear on our Bill of Materials report.

Invoke the Property Assignment Tool from the Tools Menu in ISIS. Now type in {COST=0.05} in the String field and make sure that the ‘Action’ is Assign and ‘Apply To’ is On Click.

Using the Property Assignment Tool to assign BOM properties
Using the Property Assignment Tool to assign BOM properties

Placing curly brackets around the string serves to hide it on the schematic – use this whenever you do not want to see the text beside the component.

Let’s assume that this is our unit cost for the resistors; all we need to do now is exit the dialogue form and left click on each resistor to apply the property. When the mouse is over a component you will see an equals sign in green beside the cursor, indicating that a left click will make the assignment. Note that you will not see anything happen after you click the mouse as we have chosen to hide the property text.

Left click the mouse to assign the COST property to the resistor
Left click the mouse to assign the COST property to the resistor

When you have finished you must go back into the Property Assignment tool and click the Cancel button to exit the current assignment mode.

If you prefer you can select the items on the schematic and then assign in one action. For example, enter selection mode and then hold down the CTRL button on the keyboard and left click once on the capacitors around the dsPIC processor to select them.

Now invoke the Property Assignment Tool – note that it defaults to applying on ‘Global Tagged’. Change the string to be {COST=0.10} for example and select OK to assign. Finally, remember to re-invoke the dialogue form and select cancel to exit assignment mode.

If you edit one of the capacitors or resistors you will see the property in the Edit Component dialogue form.

The COST property will appear in the 'Other Properties' area
The COST property will appear in the ‘Other Properties’ area

We can now add the COST to our Bill of Materials as discussed previously. You might also want to apply a currency prefix and have the fields totaled in the output as shown in the following screenshot.

The Edit BOM dialogue form
The Edit BOM dialogue form

You could of course continue in this vein, adding things like Supplier, RoHS, MoQ, Lead Time etc. but we would recommend that if you plan to go into this level of detail that you add the information to the master library set, such that it is then available in all future designs. This is discussed in the Appendix to this documentation (Creating New Devices) and also in a more advanced way under ASCII Data Import in the reference manual.

The Property Assignment Tool is useful in many other areas, such as bus tap labels and annotation. More information can be found in the reference manual.

 Form more information please see there tutorial from the software.

Printing

To print the schematic, first select the correct device to print to using the Printer Setup command on the File menu. This activates the Windows common dialogue for printer device selection and configuration. The details are thus dependent on your particular version of Windows and your printer driver – consult Windows and printer driver documentation for details. When you have selected the correct printer, close the dialogue form and select the Print option on the File menu to print your design.  There are a number of options available on this dialogue form, all of which have context sensitive help and are also discussed in more detail in the reference manual under Hard Copy Generation. For our purposes we will simply center the schematic output on the page and print. Do this now by right clicking on the Print Preview and selecting the Position Output at Center option as shown below.

Right click on the preview to see further option
Right click on the preview to see further option

You can also export the schematic directly in PDF format from the Output Menu (no driver installation required).

Form more information please download proteus-7.8 and go to the help.

VSM Simulation and PCB Layout

The current schematic is now ready for netlisting to the PCB Layout software so if you have purchased a Proteus PCB Design package you can move straight onto the accompanying tutorial booklet for ARES.

Alternatively, if you have purchased a license for Proteus VSM micro-controller simulation you may want to work through the booklet on VSM simulation.

 

 

#collected from the proteus>>help>> tutorial page

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