Created Date: April 21,2009

Created by: milldrone

I was wondering if anybody has writen a program to use dl06 as a light timer over a month duration

Kristjan H has given you some good advice.

It is unclear to me if you want to use a "month " with the differing number of days in each month or if you want a specific number of hours That is longer than a month.

Each is doable with the use of the proper Vmem.

V7766 = number of seconds on the real time clock 0-59

V7767 = number of minutes on the real time clock 0-59

V7770 = number of hours on the real time clock 0-23

V7771 = number of the day of the week 1 = Sunday

V7772 = day of the month 01 - 31

V7773 = number of the month 01 - 12

V7774 = contains the year 00 - 99

Oh and don't forget to set the PLC clock!

Click on PLC, setup, calendar,

If the time period is long enough and a power outage is a possibility and problem. Consider using some of the info on this thread over at PLCs.net

http://www.plctalk.net/qanda/showthread.php?t=43960&highlight=rollover