Mitsubishi Electric MELSEC iQ-R Series User Manual page 162

■Communication status (Un\G25)
This area indicates the communication status of the RJ71CN91.
Bit
b0
b1
b2
b3
b4
b5
b6
b7
b8
b9
b10
b11
b12
b13
b14
b15
*1 If the mandatory slave Boot time (index 1F89H) is set, check that the boot time is sufficient for the last mandatory slave to start. (
Page 219 Boot time)
APPX
160
Appendix 2 Buffer Memory
Description
Stores the NMT state of the RJ71CN91 when the function mode is CANopen 405 mode.
0: The NMT state is other than Operational
1: The NMT state is Operational
Error counter warning level
0: Except warning level (Below warning level, error passive, or bus off state)
1: Warning level
The warning level is judged by whichever value that is greater from the value of 'CAN transmission error counter' (Un\G35) and
'CAN reception error counter' (Un\G36). The value is automatically set to 0 if it can no longer reach the warning level.
System area
Stores the node reset status of the RJ71CN91.
0: NMT service node reset or communication reset was not received.
1: The application was reset by NMT service node reset or communication reset. All settings not saved in the object dictionary will
be cleared, and the factory default settings or the previously saved settings are restored.
Write "0" to reset this bit.
This bit is set to 0 in the beginning of the reset process.
Stores the initialization status of the RJ71CN91.
0: Initialization completed
1: Initialization in progress
The RJ71CN91 is initializing its internal data and the buffer memory.
While this bit is on, only perform read from this area or 'Error status' (Un\G29), and do not write to any of the areas in the buffer
memory.
This bit turns on when restart of the RJ71CN91 is requested by 'Module restart request' (Y2).
Always monitor this bit by the program since 'Error status' (Un\G29) does not indicate the error state.
Stores the NMT state of the RJ71CN91.
b8 = 0, b9 = 0: Stop
b8 = 1, b9 = 0: Pre-operational
b8 = 0, b9 = 1: Operational
Stores the LSS master routine status of the RJ71CN91.
0: LSS master routine inactive
1: LSS master routine active
This bit is turned on when the LSS master is searching and configuring LSS slaves.
Stores the error state at start-up of the RJ71CN91.
0: No error
1: A mandatory slave failed to start, the NMT master stopped its start-up, or the NMT master restarted to resume NMT start-up.
If this bit is on when all mandatory slaves are running, the NMT master may have been configured incorrectly. Check the settings of
*1
the NMT master.
Stores the TIME message reception status of the RJ71CN91.
0: A TIME message was not received or this bit was reset.
1: A TIME message was received. (When the RJ71CN91 is set as a TIME consumer)
Write "0" to reset this bit.
Stores the start status of NMT slaves that are not mandatory slaves.
0: No error
1: Optional NMT slave failed to start.
If this bit is 1 and b14 is 0, the NMT master needs to be reset to resume its start-up process that was stopped.
If this bit is on when all optional slaves are running, the NMT master may have been configured incorrectly. Check the settings of
the NMT master.
Stores the start status of NMT slaves when the RJ71CN91 is in NMT start-up state.
0: No NMT slave start-up in progress
1: NMT slave start-up in progress
This bit is turned on during NMT start-up, or when NMT slave is restarting due to an error occurred during NMT start-up.
Stores the status of whether the RJ71CN91 is running as the NMT master or a NMT slave.
0: Module works as NMT slave
1: Module works as NMT master