Siemens SIMATIC S5 TD 390 Manual Del Usuario página 91

Displaying and Modifying Process, Timer, Counter Values and Clock Times
Display/set
The display and setting procedures are the same as for the time.
alarm
1. Select the "Display alarm" menu.
Display
The display is the same as for time.
operating hours
1. Select the "Display operating hours" function.
The display has the following format:
O p e r a t
Reset operating
The operating hours counter can be reset to 0.
hours
2. Select the "Reset operating hours" function.
3. Acknowledge the display
The message "Reset operating hours?" is displayed.
4. Reset the operating hours by pressing the key
TD 390
C79000–K8576–C292–01
H H H H : M : S H H M S
i n g h o r s u
7-7