Download FX2N-32CAN Communication Module USER`S MANUAL

Emergency Messages 9
FX2N-32CAN Communication Module
9.
Emergency Messages
9.1
Read Emergency Message Buffers
The FX2N-32CAN will store the Emergency messages which are received from the bus to an
internal buffer. This buffer can store up to 22 emergency messages and is separated in an 11
message stack buffer and an 11 message ring buffer. The stack buffer will store the first 11
emergency messages received after PWO or after the Emergency message buffer was
cleared the last time. The ring buffer will store the next eleven Emergency messages, all
further received Emergency telegrams will overwrite the oldest message in the ring buffer. The
stack buffer will not be overwritten.
Table 9.1: Read EMERGENCY Message Buffer
BFM#
BFM 1000
BFM 1001
READ (FROM)
WRITE (TO)
Stack buffer displayed (8701 hex)
Ring buffer displayed (8702 hex)
Single message displayed (8703 hex)
CIF BUSY (FFFF hex)
Read stack buffer (0), *1
Read ring buffer (1), *2
Read next unread buffer entry (2), *3
Read stack buffer & clear buffer (10 hex), *4
Read ring buffer & clear buffer (11 hex), *5
Node ID, *6
BFM 1002
Message Counter, *7
BFM 1003
EMERGENCY data, *8
BFM 1004
EMERGENCY data, *8
BFM 1005
EMERGENCY data, *8
BFM 1006
EMERGENCY data, *8
BFM 1007
Node ID, *6
BFM 1008
Message Counter, *7
BFM 1009
EMERGENCY data, *8
BFM 1010
EMERGENCY data, *8
BFM 1011
EMERGENCY data, *8
BFM 1012
EMERGENCY data, *8
Command - 8700 hex
Unused
:
:
BFM 1055
Node ID, *6
BFM 1056
Message Counter, *7
BFM 1057
EMERGENCY data, *8
BFM 1058
EMERGENCY data, *8
BFM 1059
EMERGENCY data, *8
BFM 1060
EMERGENCY data, *8
BFM 1061
Node ID, *6
BFM 1062
Message Counter, *7
BFM 1063
EMERGENCY data, *8
BFM 1064
EMERGENCY data, *8
BFM 1065
EMERGENCY data, *8
BFM 1066
EMERGENCY data, *8
Unused if
single
message
is
displayed
Unused
9-1