Technical data

Configuring Messages
16.1 The Message Concept
Programming with STEP 7
336 Manual, 05/2010, A5E02789666-01
Examples of Message Numbering
Messaging Method Application
Block-related messages Used to report program-synchronous events, for example, to
show that a controller has reached a limit value
Symbol-related messages Used to report events that are independent of the program,
for example, a switch setting being monitored
User-defined messages Used to report diagnostic events in the diagnostic buffer, with
each call of the SFC