Rockwell Automation 2706 DL20 SERIES G USER MANUAL - Manual (Page 58)

Chapter 5
Run Mode
5–10
Setting Clock Using Special Messages
Special messages #12 and #13 allow you to set the clock remotely from the
programmable controller either:
•
Interactively. This is most useful when the programmable controller does
not know the time, but the operator does.
•
With variable data. This is useful when the host controlling the DL20
does have the time available.
Special Message 12: Interactive Clock Setting
Special message #12 allows the clock to be set interactively. When special
message #12 is triggered, the current clock setting is displayed on line 1 of
the DL20. After triggering special message #12, trigger messages to set the
time and date.
Message #1 increments the seconds
Message #2 increments the minutes.
Message #4 increments the hour.
Message #16 increments the day (Sunday, Monday, Tuesday).
Message #32 increments the date.
Message #64 causes the month to increment.
Message #128 forces PM mode, if the clock is in 12-hour display mode.
When the hour is incremented, the display automatically assumes it is
AM. If you need to set a PM time, trigger message #128 to force PM
mode after the correct hour is set.
Message #8 resumes run mode, even if a regular message is programmed
in as message number 8.
Note: When setting the clock interactively, you cannot change the year or
clock display mode (12-or 24-hour display). Setting the clock with special
message #13 allows you to change all clock settings.
Special Messages