Updating the Real Time Clock (RTC) on a M90/M91/Jazz PLC?
Eduardo Margulis
Nov-20th, 2017 8:49

You can update the RTC by storing values into the following SIs.

SI

Description

Values to Store

SI 32

Current Date - according to RTC

Store the day and month as 4 digits. For example, 0402 is February4th; 3012 is December 30th

SI 33

Current Year - according to RTC

Store the year. For example, 1961, or 2002.

SI 34

Current Day of Week - according to RTC

1 to 7, where 1= Sunday, 7 = Saturday

 

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