Lss - Mitsubishi Electric MELSEC iQ-R Series User Manual

LSS

LSS is a function to configure a CANopen node via the network in case the node ID and baud rate cannot be set via switches.
Function details
When the LSS master starts, an LSS slave is detected based on NMT slave identification information, and its baud rate and
node ID are set.
Only the active NMT master can run the LSS master function.
The RJ71CN91 supports only the LSS master function. The LSS slave function is not supported.
To enable LSS of the RJ71CN91, configure all the following CANopen settings.
Category
NMT NMT master/slave
setting
Slave
*1 n corresponds to the node ID.
If no CANopen node is detected in communications at the baud rate set in the RJ71CN91, the RJ71CN91 will change the
baud rate automatically to detect a CANopen node. Note that because communications are executed at a different baud rate,
the CANopen node in the network may be in the bus-off state. If the CANopen node does not support automatic recovery from
the bus-off state or takes some time to recover, the LSS master cannot set baud rate and node ID for the CANopen node.
To prevent unexpected start of the LSS master function, connect a CANopen node and the LSS master on a one-to-one
bases at the time of configuration. When the configuration is complete, remove the serial number from the LSS master.
• Some LSS slaves may have a built-in terminating resistor. In that case, enable or disable the built-in
terminating resistor according to the wiring condition.
1 FUNCTIONS
26
1.2 NMT
Setting value
Boot time A longer time than the target node
boot time
NMT slaves Check
NMT boot slave Check
Mandatory slave Check
Device type Identification information of the
target node
Vendor ID Identification information of the
target node
Product code Identification information of the
target node
Revision number Identification information of the
target node
Serial number Identification information of the
target node
Index - sub-index
1F89H-00H
*1
1F81H-n .bit 0
*1
1F81H-n .bit 2
*1
1F81H-n .bit 3
*1
1F84H-n
*1
1F85H-n
*1
1F86H-n
*1
1F87H-n
*1
1F88H-n