This is a program for TIA, all FBs were built using standard access (S7/300-400, don't look at Set in IDBproperty, because it isn't).
Next, TIA printing has a bug that i see, it doesnt write variables created with AT statement. There are variablesof different types that shere the same memory space:
In FB MySQL these variables are:
Usr
Pwd
DBas
TempDint_byte

In SHA1_FB these variables are:
Message_digest_word
Message_block_dword
Swap_bytes

For example part of declaration in Step7 SCL should be as follows:

Password: String[14] := 'newuser';
Pwd AT Password:
STRUCT
StrLen: BYTE;
Len: BYTE;
bytes: ARRAY[0..13] of BYTE;
END_STRUCT

2.nd example:
TempDint : DINT;
TempDint_byte AT TempDint: ARRAY[0..3] OF BYTE;


Now, since S7-1200 does not support pointers, it now uses MOVE_BLOCK and FILL_BLOCK commands, that are different from S7/300-400 BLKMOVE and FILL. You will have to see previous version that I uploaded, how to deal with pointers.
The difference is also in variabe named net_settings, in TIA this is of type TCON_Param, while in Step7 this type is not present and you have to make UDT with help of Open communication wizard.