Technical data

Displaying Reference Data
14.2 Working with Reference Data
Programming with STEP 7
322 Manual, 05/2010, A5E02789666-01
Then proceed as follows:
1. Position the cursor on Q1.0 (NW 1, Inst 1) in OB1 in the LAD/STL/FBD Editor.
2. Select the menu command Edit > Go To > Location or use the right mouse button to select
"Go to Location."
The dialog box now displays all the assignments for Q1.0:
OB1 Cycle Execution NW 2 Inst 3 /= W STL
OB1 Cycle Execution NW 1 Inst 1 /A R STL
3. Jump to "NW 2 Inst 3" in the Editor using the "Go To" button in the dialog box:
Network 2:
A M1.0
A M2.0
= Q 1.0
4. The assignments to both M1.0 and M2.0 must now be checked. First position the cursor on
M1.0 in the LAD/STL/FBD Editor.
5. Select the menu command Edit > Go To > Location or use the right mouse button to select
"Go to Location." The dialog box now displays all the assignments for M1.0:
OB1 Cycle Execution NW 3 Inst 2 /= W STL
OB1 Cycle Execution NW 2 Inst 1 /A R STL
6. Jump to "NW 3 Inst 2" in the Editor using the "Go To" button in the dialog box.
7. In the LAD/STL/FBD Editor in Network 3, you will see the assignment to M1.0 is not important
(because it is always TRUE) and that the assignment to M2.0 needs to be examined instead.
In STEP 7 versions earlier than V5, you would now have to run through the entire
sequence of assignments all over again. The buttons ">>" and "<<" make this much
simpler:
8. Place the open dialog box "Go to Location" on top, or call the function "Go to Location" in the
LAD/STL/FBD Editor from your current position.
9. Click the "<<" button once or twice until all the locations of Q1.0 are displayed; the last jump
location "NW 2 Inst 3" is selected.
10. Jump from the address locations dialog box to "NW 2 Inst 3" in the Editor using the "Go To"
button (as in point 3):
Network 2:
A M1.0
A M2.0
= Q 1.0
11. In point 4, the assignment to M1.0 was checked. Now you have to check all the (direct/indirect)
assignments to M2.0. Position the cursor on M2.0 in the Editor and call the function "Go to
Location:" All the assignments to M2.0 are displayed:
OB1 Cycle Execution NW 4 Inst 3 /= W STL
OB1 Cycle Execution NW 2 Inst 2 /A R STL