Rockwell Automation AADvance Controller Demo Unit User Manual
Page 62
Demo Unit User Manual (AADvance Controller)
4-28
Document: 553850 Issue 1.2: March 2011
There is no time limit on returning the value from TRUE to FALSE.
Example
Consider this scenario:
The date is 28th October 2008, 8 hours, 12 minutes and 35 seconds
RTC Control RTC Read is TRUE
RTC Control Year, Month and Day of Month are TRUE
RTC Control Hours, Minutes and Seconds are TRUE
The RTC status variables will be returned, and the real-time clock will be set, like this:
Year = 2,008
Month = 10
Day = 28
Hours = 8
Minutes = 12
Seconds = 35
RTC Control: RTC Read
Direction: output from application to controller
Type: boolean
Values:
TRUE = The controller updates RTC status values on each application cycle.
FALSE = RTC status values are static (do not update).
Default: [TBD]
Description:
Determines whether the RTC status variables (RTC status year, RTC status
month, RTC status day of month, RTC status hours, RTC status minutes and
RTC status seconds) will update in real time.
Important Note: All the RTC Status variables must be set to TRUE when the RTC
Read variable is set to TRUE, otherwise the RTC value will not be updated and
reported.
RTC Control: Year
Direction: output from application to controller
Type: boolean
Values:
TRUE = RTC program year will be applied by RTC Write.
FALSE = RTC program year will be ignored.
Default FALSE until an initial value is specified in the application.