Siemens SIMATIC S5 TD 390 Manual Del Usuario página 90

Displaying and Modifying Process, Timer, Counter Values and Clock Times
Set time
In order to set the time, proceed as follows:
1. Select the "Set time" function in the "Modifiable
Values" menu.
2. Press the key.
Result (e.g.) cursor is in the 2nd line
3. Set all data such as weekday, month, year, hours
and minutes using the keys.
4. End the input of each part of the date or time by
pressing the key.
Time on For reading, the TD 390 sets the flag bit (call flag) Fx.0 and resets Fx.1.
CPU 928B
The TD deletes the Fx.0 bit after leaving the time display mode. For
and CPU 948
setting, the TD sets the flag bit Fx.1. This must be deleted after setting in
the program, but this is not monitored by the TD.
Note
The TD 390 only sets/resets the flag bits.
The actual functions for "Set clock" and "Read clock" must be imple-
mented in the user program by evaluating Fx.0 and Fx.1.
7-6
Activity and result
1 3– S E P – 9 3 1 4 : 4 : 1 3 2
1 3 S E P – 9 3 1 4 : 4 : 1 3 2
Key
TD 390
C79000–K8576–C292–01