I think the problem is more in how to use the instructions with the DL06. If I read the task properly you need ANY ONE of the 16 inputs, when open, to sound an alarm but with the ability to silence the alarm....2 questions.
1. When you say OPEN do you mean as in a normally closed switch that opens?
2. Do you want to silence the alarm even if the input is still "open"?
When you open DirectSoft goto File then create a New Project, a list box will popup and select the DL05 then name the project.
When you get the ladder in view you can go to Edit in toolbar then scroll down and click Edit Mode. NOTE: Ctrl+E will also put you in Edit Mode. Once in edit mode you will see toolbar with contacts, coils, boxes etc. If you click the icon that looks like 3 boxes you will get all of the instructions listed under Box, Coil, or Contact. If you click the contact tab then it will offer Standard Contacts (same as XIO and XIC, X data type), Differetial are leading edge or positive edge "one shots". Coils can be internal bits (C or control relay type)or outputs (Y data type. When you insert an instruction you can double-click it and a window will open to set the address, on this little window will be 3 icons, the right had icon will take you to the data table where you can add names, description and wiring info.
Just insert your instructions where you want them, if you need to branch down you can goto Edit (toolbar) then click WIRE, this will show you how to put in a wire or remove it...ie wire is the line that makes a branch.
If the DL06 is available to connect too then set it up with some inputs and a light for an output then experiment with the instructions. If you know ladder all you will need is to learn where the instructions are and how to address. Help Index will explain Element Types...ie X, Y, C etc.
I am sure I left alot out but if you have more questions just ask.