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

LOGO! functions

4.4 Special functions list - SF

LOGO!

194

Manual, 04/2011, A5E03556174-01

Backup of the real-time clock

The internal real-time clock of LOGO! is buffered against power failure. The buffering time is

influenced by the ambient temperature, and is typically 80 hours at an ambient temperature

of 25°C. If you are using the optional LOGO! Battery card, or combined LOGO!

Memory/Battery card, LOGO! can retain the clock time for up to two years.

Sample configuration

The output of a LOGO! is to be set annually on March 1, reset on April 4, set again on July 7,

and reset again on November 19. You need to configure two yearly timers with

corresponding on-times. Then logically link the outputs by means of an OR block.

3XOVH 2II

0RQWKO\ 2II

<HDUO\ 2Q

<<<<00''

2))

3XOVH 2II

0RQWKO\ 2II

<HDUO\ 2Q

<<<<00''

2))

2IIWLPH$SU

2QWLPH0DU

<HDUO\7LPHU

2IIWLPH1RY

2QWLPH-XO

<HDUO\7LPHU

Result

1RYHPEHU

DWK

-XO\

DWK

$SULO

DWK

0DUFK

DWK

2II