Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual page 558

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558 Knowledgebase Quick Starts
Publication 1763-RM001C-EN-P - October 2009
The example above messages the SLC 500 Date and Time data (S:37 -
S:42)to the MicroLogix 1100 RTC, each time the SLC processor is powered
up and placed into the RUN mode or each time the Time Synchronization
Bit (B3:0/0) is enabled.
Valid years for the Micrologix 1100 begin with 1998. Any
ATTENTION
date/time/year values, prior to 1998, that are sent to a
Micrologix controller will generate a MSG Error Code
!
10h.