Siemens SIMATIC S7-300 Quick Start Manual page 59

Methods of The following methods are available for inserting FBD elements:
Entering FBD
Elements
How Do You The table below shows you step-by-step how to enter FBD elements:
Proceed?
Step
Start the assigned FBD editor by double-clicking
on FC1 in the SIMATIC Manager.
1.
Select the menu command Insert
2. create a new network or click on the relevant icon
in the toolbar.
Select the area below the network comment and
enter the FBD elements listed below via the
3.
menu command Insert
using the corresponding function keys.
Create a total of 11 networks as described above
4. and enter the elements in the relevant networks.
Save the complete and correctly created FC1
5. with the menu command File
Then program OB1 in the same way.
6.
Primer: S7-300 Programmable Controller, Quick Start
C79000-G7076-C500-01
You can insert AND boxes, OR boxes, OUTPUT boxes, and insert and
negate inputs using the function keys
you can select the required elements from the toolbar.
You can select and insert FBD elements with the menu command Insert
FBD Element.
In addition, you can select and insert program elements, for example,
timers, from a catalog. Open the "Program Elements" catalog with the
keys "Ctrl + K", or with the corresponding icon in the toolbar.
Procedure
Network to
FBD Element or
Save
Programming Logic Blocks with STEP 7
, or . Alternatively,
F2 F3, F7, F8, F9
Result
FC1 is opened and a split window appears with:
The variable declaration table and
The code section of the block.
The first network is displayed in the code section
of the open FC1. It contains a branch with a coil.
After each element is entered, it is checked for
syntax errors. Elements containing errors are
displayed in red. These must be corrected before
the block is saved.
If no syntax errors are displayed (red
background), programming of FC1 is complete
and you can now save it.
The block is saved.
OB1 is programmed and saved on your
programming device/PC.
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