Error Event Control; Boot-Up Control - Mitsubishi Electric MELSEC iQ-R Series User Manual

Error event control

When the NMT master detects an error in an NMT slave, this function controls the status of the NMT slave or network.
An error in an NMT slave is detected by node guarding or heartbeat.
For details on node guarding and heartbeat, refer to the following.
Page 56 Node Guarding
Page 58 Heartbeat
The following table shows the actions of the NMT master when detecting an error in an NMT slave.
*1
Parameter condition

The target node is not
assigned as an NMT slave.
The target node is assigned The target node is a
as an NMT slave. mandatory slave.
The target node is not a
mandatory slave.
*1 For details on the parameter setting operation, refer to the following.
Page 93 "NMT master / slave" window,Page 95 "NMT slave assignment" window

Boot-up control

After NMT startup, if the NMT master detects a new NMT slave, the detected NMT slave is started up.
Function details
When the power is turned off and on or a reset is performed, if the status of an NMT slave changes from Initialization to Pre-
operational, a boot-up message is sent.
When the NMT master detects a boot-up message for an NMT slave, the detected NMT slave is started up.
For details on the status of an NMT slave, refer to the following.
Page 18 NMT state
The NMT slave will not start up in either of the following cases:
• The NMT state of the NMT master is Stop.
• The target NMT slave is not registered for slave assignment in the parameter setting.
For details on the parameter setting operation, refer to the following.
Page 95 "NMT slave assignment" window
Action

No action
"Stop all nodes" is enabled. Execute remote node stop for all NMT slaves.
"Stop all nodes" is disabled, and Execute communication reset for all NMT slaves.
"Reset all nodes" is enabled.
"Stop all nodes" is disabled, and Execute communication reset for the target node.
"Reset all nodes" is disabled. Then, restart (boot) the target node.

1
1 FUNCTIONS
23
1.2 NMT