Alarm, error and system messages   
13.1 Displaying alarms 
  Turning 
686  Operating Manual, 03/2013, 6FC5398-8CP40-3BA1 
 
3.  Press the "Hide SI alarms" softkey if you do not wish to display SI 
alarms. 
 
 ...  
 
4.  Position the cursor on an alarm. 
  5.  Press the key that is specified as acknowledgement symbol to delete 
the alarm. 
 - OR - 
 
  Press the "Delete HMI alarm" softkey to cancel an HMI alarm. 
 - OR - 
 
  Press the "Acknowledge alarm" softkey to delete a PLC alarm of the SQ 
type (alarm number as of 800000). 
The softkeys are activated when the cursor is on the corresponding 
alarm. 
 
Acknowledgement symbols 
 
Symbol  Meaning 
 
Turn the unit off and back on (main switch), or press NCK POWER ON.
 
Press the <RESET> key. 
 
 ...  
 
Press the <ALARM CANCEL> key. 
- OR - 
Press the "Acknowl. HMI alarm" softkey. 
 
Press the key provided by the manufacturer. 
 
 
 
Machine manufacturer 
Please refer to the machine manufacturer's specifications.