Technical data

Configuring Messages
16.8 Displaying CPU Messages and UserDefined Diagnostic Messages
Programming with STEP 7
376 Manual, 05/2010, A5E02789666-01
16.8.1 Configuring CPU Messages
To configure CPU messages for selected modules, proceed as follows:
1. In the SIMATIC Manager, start the CPU Messages application via an online project. To do this,
select an S7 program online and call the CPU Messages application for the selected CPU
using the menu command PLC > CPU Messages.
Result: The "CPU Messages" application window appears which lists the registered CPU.
2. You can extend the list of registered CPUs by repeating step 1. for other programs or
interfaces.
3. Click the check box in front of the list entries and specify which messages should be received
for the module:
A: activates messages from ALARM_S blocks (SFC 18 and SFC 108 for generating
block-related messages that are always acknowledged as well as SFC 17 and SFC 107 for
generating block-related messages that can be acknowledged), for example, reporting process
diagnostic messages from S7 PDIAG, S7-GRAPH, or system errors.
W: activates diagnostic events.
4. Set the size of the archive.
Result: As soon as the above messages occur, they are written in the message archive and
displayed in the form you selected.
Note
The CPUs for which you have called the menu command PLC > CPU Messages in the SIMATIC
Manager are entered in the list of registered modules in the "CPU Messages" application window.
The entries in the list are retained until they are deleted in the "CPU Messages" application window.
16.8.2 Displaying Stored CPU Messages
CPU messages are always recorded in the archive unless you have selected the menu command
View > Ignore Message. All archived messages are always displayed.