Siemens NAN 67 Series Wartungshandbuch PDF herunterladen (Seite 52)

3-28

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

C79000-G7076-C504-02

3.14 Entering Titles and Comments

In the code section of a logic block, you can enter information such as block

and network titles, and block and network comments. These entries are

optional and not essential to the program execution.

To enter a block title or network title, position the cursor on the three

question marks to the right of the block name or network name (for example,

network 1 : ???). A text box is then opened in which you enter the title. This

can be up to 64 characters long.

Network 2: ???

Network 2:

Mouse click

Network title

Figure 3-18 Entering Block Titles

Using the View

Comment menu command, you can display or hide the

gray comment field. When you double-click the comment field, a text box

appears which you can use to enter comments. You have 64 Kbytes per block

available for block comments and network comments.

???

Comment for network or block

Mouse click

Figure 3-19 Entering Comments

Note

When you download a block to the CPU, the comments are not downloaded.

If you then upload a block from the CPU, whose original is not on your

programming device or PC, you cannot view or edit the original comments.

Overview

Entering Block

Titles and Network

Titles

Entering

Comments

Creating Logic Blocks

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Siemens NAN 67 Series Wartungshandbuch Seite 52