Siemens SIMATIC S7-300 Getting Started page 6

Step 4: Commissioning the Hardware
Stage
1 Follow the STEP 7 new project assistant on the pro-
gramming device and create a new project with the
following data:
CPU type: CPU 314 .
Block to be created: OB1
Project name: S7_Pro1
2 Double-click the OB1 icon in the right-hand part of the
window.
3 From the View menu, choose the LAD command to
switch to the LAD programming language.
4 Click exactly on the horizontal line of the rung current
path.
5 Double-click the –||– button (normally open contact) on
the toolbar and then click the –( ) button once (coil).
6 Click the red question mark of the normally open con-
tact on the left in the rung current path.
7 Enter E0.1 and press Return .
8
Label the right button in the same way with E0.2 and the coil with A4.0 .
9 Close the editor and confirm that you want to save with
Yes .
6
What to Do
S7-300 Programmable Controller, Getting Started, First Steps for Installation and Commissioning
Result
A two-part window with the title S7_Pro1 --... ap-
pears.
The editor for the OB1 block opens.
In the lower-left part of the window, a rung cur-
rent path is displayed in the network.
The line is highlighted.
The icons are inserted in the rung current path.
The normally open contact is highlighted, and a
text box with a cursor appears at the point of the
question mark.
The normally open contact on the left is assigned
the designation E0.1 .
The editor closes, and the OB1 is saved.
A5E00069340 01 // 04/2000