Using a variable to select an array

Hello everybody,

I have an idea and I hope you can help me with it. Currently I have to create the program for a palletisation cell with multiple products, each product having it's own palletisation matrix. Previously I did palletisation program where I stored the coordinates for each box on the layer in an array (a.e.: CONST num Product{3,3}:=[[X1,Y1,RZ1],[X2,Y2,RZ2],[X3,Y3,RZ3]];) where X would be the offset on X direction from the origin on wobj, Y the offset on Y and RZ the orientation of the object. With some additional variables I would do the program as following:

CONST num Product{3,3}:=[[X1,Y1,RZ1],[X2,Y2,RZ2],[X3,Y3,RZ3]];

VAR num Offs_X;

VAR num Offs_Y;

VAR num Rot_Z;

VAR num BoxNum;

Offs_X:=Product(BoxNum,1);

Offs_Y:=Product(BoxNum,2);

Rot_Z:=Product(BoxNum,3);

MoveL Offs(RelTool(Place,0,0,0\Rz:=Rot_Z),Offs_X,Offs_Y,Pallet layers),...

Now I was thinking at using multiple arrays with the same name but different number at the end (Product_1, Product_2, Product_3,...) and getting ths values from them something like this:

VAR num ProductID;

Offs_X:=Product_{Product_ID}(BoxNum,1);

Offs_Y:=Product_{Product_ID}(BoxNum,2);

Rot_Z:=Product_{Product_ID}(BoxNum,3);

I'm waiting for your feedback and help. Thank you for your help!

Best regards,

Claudiu

Quote from hermann

Why not creating you own data record with offsets and then a two dimensional array for your positions.

Code

RECORD mydatatype
real offs_x;
real offs_y;
real rot_z;
ENDRECORD
CONST mydatatype Product{10,3}:=[[... 

first index product, second boxnr.

Edit:

You can use Getdataval() to do what you want, read the manual for the function. Getdataval.

Something like

Code

Offs_X:=getdataval("Product_" +inttostr(Product_ID) +"(" +inttostr(BoxNum) +",1)");

I wouldn't use this approach, as it's not good readable, and needs too much "brain wax" to follow what the code is doing.

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Hello Hermann, thank you for your help, it worked!

Best regards,

Claudiu