In Built System IO and Logic

I am using a CTouch for a project and wish the user to be able to adjust two schedule times, one for Sunrise +/- and Sunset + / -.
These schedules are used to change state of an In Built User System IO ("Night Time Status" where 1 is Night and 0 is Day), in conjunction with an external PE, that has been created for keeping track of Day / Night.
The reason for using the System IO is that if the CTouch reboots or has lost power for any reason the logic will know what state it was in prior to reboot. Also if the external PE fails then the schedule will change state of this point also.
The PE is the preferred method of controlling lighting as it is giving true indication of light levels.
Is it possible to recall a specific schedule time, ie schedule #1 (adjusted Sunset) & #2 (adjusted Sunrise) so that the logic can be in an initialisation module:
if
time > schedule #1 time and time < schedule #2 then
begin
SetIntSystemIO ("Night Time Status", 1); etc.

Any help would be greatly appreciated.

 

System IO variables are of two types; "user" and "in-built". There is no such thing as an "In Built User System IO". I assume you mean a user system IO variable.

Also, why use values of 0 and 1? A boolean system IO variable would be more appropriate.

It would help a lot if you could explain what you are trying to do.

You can set the "Schedule Number" in-built system IO variable, then read the "Schedule Time" in-built system IO variable value to get the time the schedule occurs.

Read the logic help file topic "time function" for examples of how to write correct logic code to detect when it is night time.