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FX2N-32CAN Communication Module
Table 4.5: Error Bit Description for BFM #29
b9: Command queue or event
queue overflow
b10: CANopen guarding error
b11: Baud rate change error
b12: Address change error
b13: CANopen emergency
b14: CAN error passive state
b15: Reserved
NOTE:
1. The error bits b2, b8, and b9 are latched and must be reset from the PLC by writing "0" to
the appropriate bit in BFM #29. By writing "0" to all of BFM #29, all latched error flags will be
cleared.
2. All other error flags will be reset automatically as soon as the corresponding error has been
solved.
4.2.8
BFM Data Memory Backup
The data in BFM #24, #26, and #27 are kept by EEPROM.
Bit
Data could not be written to internal
command queue or event queue
CANopen guarding error occurred
New baud rate not valid, no change
New address not valid, no change
CANopen emergency occurred
CAN error passive
On
N o c o m m a n d q u e u e o r eve n t
queue overflow
N o C A N o p e n g u a r d i n g e r r o r
occurred
Set baud rate valid
Address is valid
No emergency exists
CAN error active
Buffer Memory Structure 4.
Off
4-7
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