Hello, 

Is it possible to use like below?

TEST_PH : array[0..10] of bool;

instance DB :  DB_PH101 , DB_PH102 , DB_PH103 .....

for x := 0 to 10 do

TEST.PH[x] := DB_PH10[x].start;

end_for;

I want to change the instance db number using for...

if possible, how to change the instance db number 101 , 102 , 103 ...

Thank you. But this is not easy for me. 

Can you give me code?

instance db : DB100.DBX14.0 / DB101.DBX14.0 / DB102.DBX14.0 .... DB150.DBX14.0

TEST : ARRAY[0..50] OF BOOL;

x : int;

TEST[0] := DB100.DBX14.0 

TEST[1] := DB101.DBX14.0

~~~~

TEST[50] := DB150.DBX14.0

I can write 50 line like above. But I want to use "for next" to reduce the line.

for x := 0 to 50 do

test[x] := "?????"

end_for;

Can you help this?

Sounds to me like you could use any pointers.  

Maybe this topic could help you:

https://support.industry.siemens.com/tf/ww/en/posts/loop-through-datablocks/261740/?page=0&pageSize=10#post1014829