AM58K CANopen®
6.11 Node guarding protocol
At system boot the “Node guarding protocol” is disabled; this protocol is enabled
automatically as soon as the master device sends a RTR message (Remote
Transmission Request) the first time.
: interval between two RTR messages.
Node life time
:
maximum time available for the encoder to receive a
RTR message.
Node life time
“Node guarding” is enabled if
Node life time
0.
If the slave does not receive a RTR message before the
Node life time
has
expired, it warns activating a “Life Guarding Event”. Furthermore the red LED
starts flashing so indicating the Node guarding error, objects
are updated and an error message
is sent.
To reset the error send a
Reset node
command.
MAN AM58K CB E 1.1.odt
48
6 - CANopen® interface
time
Master
Slave
RTR
request
NodeGuard.
response
RTR
request
Node life
time
Node guarding
event
Life guarding
event
Guard
time