Siemens 6ED1050-1AA00-0BE8 Manual De Usuario

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LOGO! functions 
 
4.4 Special functions list - SF 
LOGO! 
Manual, 04/2011, A5E03556174-01 
195
 
4.4.13 
Astronomical clock (0BA7 only) 
Short description 
The astronomical clock function is used to set an output high when the current time of your 
LOGO! Base Module is between the time of sunrise (TR) and the time of sunset (TS). 
LOGO! automatically calculates these times based on the geographical location, the settings 
for automatic summertime/wintertime conversion, and the current time of the module.     
 
Symbol in LOGO! 
Wiring 
Description 
Parameter 
You specify the longitude, altitude and time zone: 
Longitude:  
Direction settings: 
EAST or WEST 
Range of values:  
0 to 180° (degrees) 
0 to 59' (minutes) 
0 to 59" (seconds) 
Latitude:  
Direction settings: 
NORTH or SOUTH 
Range of values:  
0 to 90° (degrees) 
0 to 59' (minutes) 
0 to 59" (seconds) 
Zone: 
Range of values:  
-11 to 12 
4
3DU
$&
 
Output Q 
Q is set to "1" when the current time of your LOGO! 
Base Module is between the sunrise time (TR) and 
the sunset time (TS).  
 
 
 
Note 
From LOGO!Soft Comfort V7.0, you can choose from several pre-defined time zone 
locations. If you select one of these locations, LOGO!Soft Comfort uses the latitude, 
longitude, and the time zone of your selection. This location pre-configuration capability is 
only possible from LOGO!Soft Comfort.