Siemens NAN 67 Series Instrukcja Obsługi Pobierz pdf (Strona 43)

3-19

Ladder Logic (LAD) for S7-300 and S7-400

C79000-G7076-C504-02

The following options are available for inserting Ladder elements:

S Enter a normally open contact, normally closed contact, or coil using the

function keys

F2, F3, or F4.

S Click on the button for a normally open contact, normally closed contact,

or coil from the toolbar.

S Select an element from the Insert

LAD Element... menu.

S Select elements from the list box in the Program Elements dialog (see

Figure 3-12). To display this dialog box, use the menu command Insert

Program Element..., the button in the toolbar, or the function key F11.

#g car

FB6-<Offline> - LAD/STL/FBD Programming S7 Blocks

Press F1 for help. Insert

FB6-<Offline>

File Edit Insert PLC Debug View Options Window Help

Network 1 : Red request for road traffic

Network 2 : Green for cars

#starter

#condition

#t_next_red_car #t_dur_r_car

Network 2 : Start permanent amber for road traffic

#condition

FB6 : Traffic light

Program Elements

Compare

Convert

S_CD

S_CU

S_CUD

DB Call

Real Number Fct.

Counters

Floating Point Number

Bit logic

Object

Block Tem

plate

ta Type

eclaration Row

Netw

ork

Program Elements

LAD Element

Figure 3-12 Inserting a Ladder Element Using the Program Elements Dialog Box

Ladder elements are always inserted behind the currently selected element.

Entering Ladder

Logic Elements

Creating Logic Blocks

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 317 318

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