nana,
you have most of the code already there!
Basically you just need a For- or While-Loop around what you have.
If you prefer a For-loop, than create an array control or constant of strings and fill it with all the different strings you'd like to send. Don't forget the and or character those devises usulaly require. Either concatenate it inside the loop or enter it manually. Wire this array to the loop boundary - it will autoindex and be a single string inside of the loop. Wire this string to the GPIB send command. Wire the devices reply to the right side of the loop. Create a display for this ouside of the loop and you'll get all the replys as an array as well.
If you prefer While loops, keep in mind that those do not autoindex per default; it can, however be activated by a right-click.
HTH and
Greetigs from Germany!
--
Uwe