Modicon M340-Unity S

[Marjan 0]

Hello! We have a problem with adding DI to digital registers. Is it possible to add all DI (I0.1.0 - I0.1.64) to digital registers (%M0-%M63) at once and not one by one? This I mean if there is a block to do this? Have a nice day Marjan

[Henrique 0]

1) Go to Tools -> Project Settings -> Language Extensions -> Data Types enable the options: "Directly represented array_variables" and "Allow Dynamic Arrays" Now you can build this expression: %m0:64:=%i0.1.0:64; It means that you want to copy the variables %i0.1.0 ... %i0.1.63 to %m0 ... %m63 Done! Edited 6 Aug 2009 by Henrique

[Marjan 0]

Thank you! Now I have another question. I want to put more rows in my FDB sections, but it seems it doesen´t wor, when I change it in the project settings. How can I do that? I was using direct adresses until now (like %M2001,...), but now I want´t to use symbols instead of direct adress. Why doesen´t change in the program from %M2001 to Pump1 when I put the symbol in the variable table with this address? Have a nice day

[aggattapauer 2]

Because basically direct address and symbol are two different variables or better instances of data types. Infact you could assign several symbols to the same variable. For example you could have a variable at address %MW0 that you use in the program as auxiliary variable in a calculation in that case you could assign many instances of it. Variable1 Variable2 Variable3 Variable4 The expression for example is: %MW0:=1+1; %MW0:=%MW0*2; %MW0:=%MW0/2; %MW0:=%MW0-2; For better "read" the expression could be useful to have different name for each step, so: Variable1:=1+1; Variable2=Variable1*2; Variable3:=Variable2/2; Variable4:=Variable3-2; or better addition:=1+1; multiplication=addition*2; division:=multiplication/2; subtraction:=division-2; all variables have the same address %MW0, they are instances of data type INT located in the memory at address 0. I hope you could understand my poor english and my explanation...

[Henrique 0]

You must configure the area (number of rows x columns) for FBD projects. In Unity click on Tools ? Project Settings ? Editors. You will see the configuration for FBD project area. Unity is IEC based and most of the variables are non allocated variables (without a physical address), so you can program it the way you want. If you used direct address, Unity will not change to symbols. Actually it does not have the same concepts that were used in PL7 for example. You don't have symbols, you have variables. You should declare the variables with the names and types (bool, ebool, string, integer, real, etc) that you want to use. You do not have to concern about address, Unity will do that part for you. If you need to use an direct address (%M or %MW) for network or HMI or if the variable is an I/O, than you can go to the Variables & FB instances folder and inform the address for these variables in the address column.

[Marjan 0]

OK, thank you for the information! I want to lock the program with password, so that when someone want´s to change it or upload it from the PLC has to know some kind of password. Is this possible and how can I do that? Have a nice day