Technical data

Configuring Messages
16.1 The Message Concept
Programming with STEP 7
344 Manual, 05/2010, A5E02789666-01
16.1.8 How to Generate an STL Source File from Message-Type Blocks
When you generate an STL source file from message-type blocks, the configuration information is
also written to the source file.
This information is written to a pseudo-comment that begins with "*$ALARM_SERVER" and ends
with "*".
Caution
When you set a symbolic reference for a block, note that the symbol table may not be modified prior to
the compilation of the source file.
When the source file contains multiple blocks, several pseudo-comment blocks will be joined to
form a single comment block. Individual blocks with message attributes must not be deleted from
the STL source file.
16.1.9 Assigning Message Numbers
You can specify if you want to assign message numbers for the project (project-oriented message
numbers) or for the CPU (CPU-oriented message numbers). Assigning message numbers for the
CPU has the advantage of allowing you to copy a program without having the message numbers
change, in which case they would have to be recompiled. It is only possible to display message
numbers for the CPU on an HMI device with the applications "WinCC V6.0" and/or "ProTool V6.0".
If you are working with an earlier version of these applications, you have to select message
numbers for the project.