This information is part of the Modelica Standard Library maintained by the Modelica Association.

This block describes a unit delay:

          1
     y = --- * u
          z

that is, the output signal y is the input signal u of the previous sample instant. Before the second sample instant, the output y is identical to parameter yStart.

samplePeriod	Value: Type: Time (s) Description: Sample period of component
startTime	Value: 0 Type: Time (s) Description: First sample time instant
y_start	Value: 0 Type: Real Description: Initial value of output signal

sampleTrigger	Type: Boolean Description: True, if sample time instant
firstTrigger	Type: Boolean Description: Rising edge signals first sample instant