1500 STL

does 1200/1500 can use AR to selection DB ?

it with S7-300 the same ?

In S7-1200's the STL is not present. Only in S7-1500's.

how can use stl move more data to struct ？

OT.

In S7-300/400 the STL offered power and possibility to do things impossible in the LAD or FBD. And the SCL was paid option.

But in S7-1500 all things needed by the STL (accus, registers) are EMULATED. And the STL itself is only there for backward compatiblity (a soft written in it for previous S7's should be migrated somehow).

In fact I'd discourage you from using STL in case of S7-1500. Everything can be done without it.

For the pointers you can refer the following

https://support.industry.siemens.com/cs/document/22422028/how-can-you-calculate-an-offset-for-an-any-pointer-or-change-the-pointer?lc=en-US&dti=0

but if you want to move several datas to structures then I will suggest you to go for ANY datatype and to play with SFC20 MOV_BLK

for it you can see help meno for ANY datatype for STL 

but as told earlier that S7-1200 do not have stl.

also got some link for ANY data type

https://support.industry.siemens.com/cs/document/20443243/how-do-you-parameterize-blocks-which-have-any-type-or-pointer-type-parameters-?dti=0&lc=en-WW

hope it helps if have queries post back

TechWing

MOVE_BLK not support STRUCT ...

 It supports if you use it properly by means of ANY data type

I can't follow what you are going to do. But if 2 structures are of the same type, you can copy one to the other by simple assignment.

Here you can find an example.