Heartbeat
This is a ROS message definition.
Source
# Message to notify that the node is alive to other nodes
# idx of the message
uint64 beat_count
# namespace of the node
string node_ns
# name of the node
string node_name
# full node name
string full_name
# serial number of the input camera
uint32 camera_sn
# data from an svo?
bool svo_mode
#data from simulation?
bool simul_mode