Operating a project   
8.1 Operating a project on OP 73micro 
  OP 73micro, TP 177micro (WinCC flexible) 
104  Operating Instructions, 09/2007, 6AV6691-1DF01-0AB0 
System keys 
The system keys (control keys) are used for operator input on the HMI device. 
Table 8-1  Overview of control keys 
Function  Action 
Moving the cursor 
DEL
, 
INS
 
Activates the next field in horizontal direction  
TAB
, 
+/–
 
Activates the next field in vertical direction 
Activate field 
SHIFT
 + 
TAB
 
Activates the next field in the tab order defined in your project 
SHIFT
 
Enables an overlay function of a further system key 
Viewing infotext 
SHIFT
 + 
ESC
HELP
 
Opens a window containing infotext on the selected object 
You can press 
ENTER
 to toggle between infotext for a screen and an object, 
for example, for an IO field. 
Cancel action. 
ESC
HELP
 
•  Undo 
You can undo your input as long you have not yet confirmed it with 
ENTER
. 
•  Close the alarm window - if configured. 
•  Cancel the output of infotext to return to the previous view. 
Acknowledge alarm 
ACK
 
Acknowledges the current indicated or selected alarm or all alarms of an 
acknowledgment group, depending on your configuration. 
ENTER
 
•  Call editing mode – initiates input with 
TAB
 and 
+/–
 
•  Exit editor mode and confirm input 
Navigating in lists 
Table 8-2  Keys for navigation in lists 
Button  Action on pressing 
TAB
 or 
+/–
 
Selects the previous or next list entry