Siemens SINUMERIK 828D Function Manual page 1115

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Table of Contents

Using special data blocks

The Programming Tool PLC828 offers you the possibility of using special data blocks for tool change,

maintenance planning and the device manager. You will find these in the operation tree under "Libraries" >

"Special data blocks".

These data blocks have a fixed structure. They can be used with a double click or using Copy and Paste (in the

operation tree).

The following special data blocks are available:

Resolving errors

The Programming Tool PLC828 marks errors made when data is being entered (e.g. in the LAD Editor or the

symbol table). For example, an illegal syntax or the use of invalid values can result in input errors. You must

correct all errors that have occurred before you can compile error-free and load the program into the CPU.

Every data block is involved in the compilation run of the project.

Compilation is started:

Using the menu command "Target system" > "Compile"

•by clicking on the symbol.

If any errors occur during compilation, then they are displayed in the output window. Position the cursor to an

error message in the output window and double click on it so that you see the line in the data block with the error.

Loading the data block into the target system

Here, reference is made to Chapter "Data classes [Page 1119]" in which loading and saving (not only data

blocks) is explained in detail.

After making structural changes to a data block, this must be loaded into the target system with the PLC in the

stop state. The changes only become effective when subsequently going into the RUN operating state. If the

target system identifies that a data block is new or has been changed, then it sets the initial values for this

data block as the first actual values.

Basic Functions

Function Manual, 09/2011, 6FC5397-0BP40-2BA0

Constant transfer step table for tool change

Variable transfer step table for tool change

Acknowledgment step table for tool change

Start data for maintenance planner

Actual data for maintenance planner

Interface for device manager

P4: PLC for SINUMERIK 828D

14.3 Programming

Sinumerik 840d sl