42/24-10 EN Rev. 9  Chapter 10: Status Messages, Troubleshooting  10-5 
Status Message Categories 
 
Status Message 
Categories 
In terms of operator reaction, there are three categories of status messages (see 
the summary on the following page): 
 
• Status messages not requiring acknowledgment 
• Status messages requiring acknowledgment 
• Status messages requiring acknowledgment and intervention 
 
Status Messages  
Not Requiring 
Acknowledgment 
The system operates normally after the status is cleared. 
 
When the status is cleared, the LED goes out, the status signal is reset and the 
status message is canceled. 
 
Example: Temperature error during the warm-up phase. 
 
Status Messages 
Requiring 
Acknowledgment 
The system operates normally after the status is cleared; however, the operator is 
aware of the status. 
 
When the status is cleared, the LED goes out and the status signal is reset. The 
status message is only canceled after operator acknowledgment. In this manner, 
the operator is aware of the system malfunction. 
 
Example: No new measurement values from the analog/digital converter. 
 
Status Messages 
Requiring 
Acknowledgment and 
Intervention 
The system may not operate normally after the status condition is cleared; 
therefore, the operator should acknowledge the condition and actively eliminate 
the cause of the message. 
 
The LED goes out, the status signal is reset and the status message is only 
canceled after the operator acknowledges the status message and eliminates the 
cause. 
 
Example: The offset drift between two calibrations exceeds the permissible range. 
 
Continued on next page