Echelon LonPoint Application and Plug-In - Manual (Page 95)

The LonPoint Application and Plug-in Guide 9-11
Heartbeats
This tab appears as follows:
This tab determines input and output heartbeats, as well as the execution rate of
the PID controller.
Input Heartbeat Determines the interval (in seconds) the network
variables that have the Use Heartbeat option selected
will wait for a heartbeat before registering a heartbeat
failure.
Use Heartbeat Determine whether the corresponding network variable
checks its heartbeat. Click the All or None buttons to
enable heartbeat checking for all input network
variables or none of the input network variables,
respectively.
Scan Interval Indicates how often (in milliseconds) the PID controller
will execute (i.e. compare the setpoint and the process
variable and send a value to the controlled variable).
This may be set to 0.5 sec, 1 sec, 2 sec, 4 sec, 8 sec, 16
sec, or 32 sec.
Output Heartbeat Determines how often the output network variables
send a heartbeat. The expected heartbeat rate and