OUTPUT_REF

The data type OUTPUT_REF contains data describing the state of a digital output. In addition to the switching state it contains time stamps for state changes.

TYPE OUTPUT_REF :
STRUCT
    Level                : BOOL;       (* current level of the digital output *)

    NextStateChangeValid : BOOL;       (* time value NextStateChange is valid *)
    NextStateChange      : T_DCTIME32; (* time of next state change - current level will be inverted *)

    NextOnTimeValid      : BOOL;       (* time value NextOnTime is valid *)
    NextOnTime           : T_DCTIME32; (* time when the digital output is turned ON next time *)

    NextOffTimeValid     : BOOL;       (* time value NextOffTime is valid *)
    NextOffTime          : T_DCTIME32; (* time when the digital output is turned OFF next time *)
END_STRUCT
END_TYPE

Level	Current switching state of the digital output
NextStateChangeValid	NextStateChangeValid is TRUE, if the time stamp NextStateChange is valid.
NextStateChange	Time of the next change of state (distributed clock TimeStamp)
NextOnTimeValid	NextOnTimeValid is TRUE, if the time stamp NextOnTime is valid.
NextOnTime	Time of the next positive switching edge (distributed clock TimeStamp)
NextOffTimeValid	NextOffTimeValid is TRUE, if the time stamp NextOffTime is valid.
NextOffTime	Time of the next negative switching edge (distributed clock TimeStamp)