Mitsubishi Electric MELSEC iQ-R Series User Manual page 171

■NMT state (Un\G601 to Un\G727)
This area indicates the NMT state of each CANopen node. ( Page 18 NMT state)
The NMT state of the own node is always stored.
For the NMT states of other nodes, the states obtained as follows are stored. If the state is not obtained, 00H (NMT state
unknown) is stored.
Status
When the own node is the active NMT master
When the own node is not the active NMT master
For details on heartbeat and node guarding, refer to the following.
Page 58 Heartbeat
Page 56 Node Guarding
For details on the value displayed in this area, refer to the following.
Page 217 Request NMT
• To obtain the NMT state of the target node from this area when own node is the active NMT master, check
that node guarding or heartbeat consumer is in progress for the target node in 'NMT error control status'
(Un\G401 to Un\G527). (For the NMT error control status, check that node guarding is enabled or that
heartbeat is enabled.)
• Depending on the timing of communication, the NMT state of the target node in this area may become
temporarily inconsistent.
Address
Un\G601
Un\G602

Un\G726
Un\G727
Action
The latest NMT state among the following NMT states is stored.
• The NMT state in which the own node instructed the target nodes through
the NMT startup function or node control
• The NMT state obtained from the target node through node guarding or
heartbeat consumer
The NMT state obtained from the target node through heartbeat consumer is
stored.
Description
CANopen node 1
CANopen node 2

CANopen node 126
CANopen node 127
APPX
Appendix 2 Buffer Memory
A
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