Monitoring
Node Guarding Protocol
11
l
85
EDSMF2178IB EN 3.0
11.2 Node Guarding Protocol
) Note!
ƒ Only one monitoring function can be active:
– Heartbeat or node guarding.
ƒ Heartbeat has priority over node guarding:
– If both functions are configured, the heartbeat settings will be active.
The "Node Guarding Protocol" serves to monitor the connection between the NMT master
and the NMT slave(s) within a CAN network.
) Note!
An NMT master can be a PLC with a CAN interface or a PC card.
The NMT slave function of the "Node Guarding Protocols" (DS301, version
4.01) is supported by the EMF2178IB communication module.
2175COB001
Fig. 11−1 Telegram transfer between NMT master and NMT slave
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