Rockwell Automation 22-COMM-L LonWorks Adapter - Manual (Page 41)

Configuring the Network 4-13
The values of the NCIs change when written to and keep their values
after a power cycle.
All NCIs, with a corresponding parameter in the drive, are read from the
drive after reset and when going from offline to online. When the
parameter is updated from the network, it is written to the drive.
NCI: nciSndHrtBt
Format: SNVT_time_sec
Explanation: This Network Configuration Input sets the maximum send
time for the variable nvoDrvSpeed.
Valid Range: 0.0 - 6553.4 seconds
Default Value: 0.0 seconds (disabled)
NCI: nciRcvHrtBt
Format: SNVT_time_sec
Explanation: This Network Configuration Input sets the maximum time
that is allowed to elapse between updates of the Network Variable Input
nviDrvSpeedStpt. Setting nciRcvHrtBt to 0.0 seconds disables the
Receive Heartbeat function. If a timeout occurs, the adapter will issue
the fault action set in Parameter 06 - [Comm Flt Action]. A timeout
cannot occur before the reception of the first nviDrvSpeedStpt update.
Valid Range: 0.0 - 6553.4 seconds
Default Value: 120.0 seconds
Network Configuration Inputs (NCIs)
Send Heartbeat
Receive Heartbeat