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T I A  Training Document 

Page 111 of 129 

  Module 

 

 

 

      F6 

Issued: 02/2008 

Operator Control with WinCC flexible 2005 

Preface Installation Project Description Step7 Project HMI Station WinCC flexible Project Messages Recipes User Management 

 

The representation of the color mixing plant is by and large completed. What still needs to be done 
are the messages. Messages are generated if an event bit occurs (bit messages), or when a limit is 
overrange or underrange (analog messages). 
The message texts contain a description of the cause for the message with the message status, or 
only notes on the current operation of the plant. 
We differentiate message classes such as warnings or errors for operational messages and  fault 
messages. Operational messages refer to the states of a machine or a process.  Fault messages 
indicate alarms of a machine or a process and have to be acknowledged. 

 

 
The levels of the three tanks and of the container are to be monitored. 
If a tank or the container is full, a fault message is to be read out. 
 
In the project window, double click on analog messages. 
Enter the message texts and the monitored variables. 
For the tank limits, use the variable of the maximum fill setpoint. 
For the container limit, enter as the constant value  2999. 
 

 

 
Note 
You can also generate several messages for one monitored variable.  
You only have to set different limits with the rising or falling edge. 
 

 
Bit messages are configured just like analog messages; only here, the message is read out when an 
event bit is pending. 

 

 

 

Maximum level reached

Container full 

Error

  Error         CONTENT_T1

 At rising edge