11.7.2 Boot-Up message
The Boot-Up message is sent automatically when the device is powered on or reset
(i.e. fault reset).
This helps the PLC recognizing to switch on a device (i.e. after a
power failure and recovery) reliable during operation without Nodeguarding.
If the inverter is switched on after the PLC, the PLC can use this boot-up message
to begin the initialization. The boot-
up message signals the PLC, that the inverter is
ready for the PLC to communicate.
Using a NMT telegram “Reset Node” or “Reset
Communication” forces a Reset of the node communication and results in a Boot-
Please refer also to chapter 11.8 “Guarding”.
11.7.3 NMT commands
id = 0 command addressed to all devices
id = 1…0x7F (=127) command addressed to device with Node-ID = id
cs: 1 Start Remote Node
2 Stop Remote Node
0x80 (=128) Enter Pre-Operational
0x81 (=129) Reset Node
0x82 (=130) Reset Communication
NMT states and active communication objects:
Node control + NMT
error control *
* NMT commands + Guarding/Heartbeat function
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