Copy group bit from DB

Hello!

I have a data area containing the BOOL, such as DB. I need to copy a group of BOOL data from any place to another DB. For example copy the 180 bit from DB1.DBX5.3 to DB2.DBX2.0. How fast is realize in the STL (or SCL) in STEP7?

At first I wanted to use BLKMOV, but it is not suitable.

Thanks!

AlexPat

...
 At first I wanted to use BLKMOV, but it is not suitable.

...

 Why? Because you are not working with byte - granular amount of bits?

Help on BLKMOV:

 "If the ANY pointer (source or destination) is of the type BOOL, the specified length must be divisible by 8 otherwise copying is not possible."

Also, the initial position must be a zero bit.

If this does not comply, the BLKMOV error:

8x28 Alignment error when reading a parameter.

8x29 Alignment error when writing a parameter.

8x22 Range length error when reading a parameter.

8x23 Range length error when writing a parameter.

IBN-Service

... it is easy to do by using an anypointer.

 Please, show example.

 Known sequence number the start bit and the number of bits. I did so:

VAR_INPUT
  s_db : INT ;    //source db
  d_db : INT ;    //destination db
  len : INT ;    //the number of bits to be copied
  start_bit : INT ;    //start bit
END_VAR
VAR_TEMP
  count : INT ;    //
  loop_adr : INT ;    //
END_VAR
BEGIN
NETWORK
TITLE =
//calculate address
      LAR1  P#0.0;
      L     #start_bit;
lp1:  T     #loop_adr;
      +AR1  P#0.1;
      L     #loop_adr;
      LOOP  lp1;
//copy bit
      LAR2  P#0.0;
      L     #len;
loop: T     #count;
      OPN   #s_db;
      A     DBX [AR1,P#0.0];
      OPN   #d_db;
      =     DBX [AR2,P#0.0];
      +AR1  P#0.1;
      +AR2  P#0.1;
      L     #count;
      LOOP  loop;
END_FUNCTION

"  +AR1  P#0.1; "

Just as background Information, that is not possible any more with 1500 CPU (TIA).