Hardware manual

RX600 Series CAN Application Programming Interface
R01AN0339EU0203 Rev. 2.03 Page 27 of 29
Mar 23, 2013
Figure 8. A node in Listen Only mode will not acknowledge messages or send Error frames etc
Listen Only is useful for bringing up a new node that has been added to an existing CAN bus. The mode can be used for
a recently connected node’s application to ensure that frames have properly been received before going live.
A common usage is to detect a bus’s communication speed before letting the new unit go ‘live’. Listen Only is not a
part of the Bosch CAN specification, but is required by ISO-11898 for bitrate detection.