Siemens sinumerik 802d sl Operation And Programming Manual page 112

System
7.3 PLC diagnosis represented as a ladder diagram
Fig. 7-40
This window displays all logical and graphical information of the PLC program running in the
Window 1
appropriate program block. The logic in the LAD (ladder diagram) is divided into clearly
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structured program parts and current paths, called networks. Generally, programs written in
Window2
LADs represent the electrical current flow using various logical operations.
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Fig. 7-41
In this menu, you can switch between symbolic and absolute representation of the operand.
Program sections can be displayed using various zoom factors; a search function is pro-
vided to find operands quickly.
This softkey can be used to display the list of the PLC program blocks. Use the direction or
Program
block
the PageUp/PageDown keys to select the PLC program block to be opened. The current
program block is displayed in the Info line of the list box.
7-112
Status list
Window 1
SINUMERIK 802D sl Operation and Programming Nibbling (BP-N), 06/2006 Edition
6FC5 398-3CP10-0BA0