Mitsubishi Electric CANopen ME3CAN1-L, User Manual

Page: 46 / 188

Detailed Description of the Module Buffer Memory Details: CANopen Mode
3 – 24 MITSUBISHI ELECTRIC
3.5.17 Emergency Message Buffer (Un\G750–Un\G859)
The ME3CAN1-L 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 (Un\G750 to Un\G804) and an 11 message ring buffer (Un\G805 to Un\G859).
The stack buffer will store the first 11 emergency messages received after power on or after the Emer-
gency 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 buf-
fer. The stack buffer will not be overwritten.
To ensure that the EMCY data are handled in a consistent way, it is necessary to refresh the data before
reading the EMCY data (turn Xn1 ON, refer to section 3.3.2).
To clear the entire buffer, write 0
H
to Un\G750.
For emergency error codes please refer to section 8.2.1.
Address
(Decimal)
Name
Description
High byte Low byte
750 Node ID
Stack buffer
The node-ID number which sent the emergency message to
the network is displayed.
751
EMERGENCY data
Emergency Error code
���
(oldest message)
752
Byte 0 of manufacturer-spe-
cific error code (msef )
Error register
753 Byte 2 of msef Byte 1 of msef
754 Byte 4 of msef Byte 3 of msef
:
: :
:
:
:
800 Node ID
The node-ID number which sent the emergency message to
the network is displayed.
801
EMERGENCY data
Emergency Error code
���
(newest message)
802 Byte 0 of msef Error register
803 Byte 2 of msef Byte 1 of msef
804 Byte 4 of msef Byte 3 of msef
805 Node ID
Ring buffer
The node-ID number which sent the emergency message to
the network is displayed.
806
EMERGENCY data
Emergency Error code
���
(oldest message)
807
Byte 0 of manufacturer-spe-
cific error code (msef )
Error register
808 Byte 2 of msef Byte 1 of msef
809 Byte 4 of msef Byte 3 of msef
:
: :
:
:
:
855 Node ID
The node-ID number which sent the emergency message to
the network is displayed.
856
EMERGENCY data
Emergency Error code
���
(newest message)
857 Byte 0 of msef Error register
858 Byte 2 of msef Byte 1 of msef
859 Byte 4 of msef Byte 3 of msef
Tab. 3-19: Buffer memory addresses allocated to the Emergency Message Buffer