Echelon LonPoint Application and Plug-In - Manual (Page 48)

4-10 Digital Output Functional Block
output network variable. This signal can come from a
network variable or from the Hand-Off-Auto switch.
The signal being sent to the hardware digital output
is sampled at this rate, and the network variable is
updated whenever the value changes or when
determined by the heartbeat.
Status
This tab allows you to view and change the status of the Digital Output
functional block. See Status in Chapter 2 for more information.