D301087 0308 - BL20 CANopen 4-15
Setting up communication
4
Boot-up Message
After initialization (after Power-On, Reset-Node and Reset-Commu-
nication), a Boot-up message as per CiA DS-301 V4.0 is sent out.
This is in the form of a guard frame with the contents 00
hex
.
Under certain circumstances, a network manager may fail to detect
a short drop-out of an BL20 gateway (for example, as a result of
voltage variations). This could occur under the following conditions:
The drop-out and initialization of the gateway happen in the time
between two Guarding-Frames
The gateway was already in the Pre-Operational state before-
hand
The last state of the toggle bit was 1
If a Boot-up message is sent out after a reset or initialization, then
the drop-out mentioned above will also not be missed by the
network manager.
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