Bfm #3000 To #3879] Configuration Of Remote Address To Ecu Name Assignment - Mitsubishi Electric MELSEC-F FX3U-J1939 User Manual

FX -J1939 User's Manual
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5.22 [BFM #3000 to #3879] Configuration of Remote Address to ECU Name
Assignment
When the remote nodes of a J1939 network support dynamic address allocation, it is possible that a remote
node changes its current node address due to an address conflict. Additionally, a configuration tool could
send a "commanded address" message, which would also cause the remote node to change its address.
This could cause a problem if the source/destination node address, configured in the FX
by the expected node anymore.
To avoid this, the FX
used in the FX
If the FX -J1939 receives an address claim message from one of the ECUs listed in this ECU Name list, it
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checks if the node address has changed. The FX
communication will not fail after an address change (the destination address of TX PGNs or the source
Address of RX PGNs is adjusted).
For the Industry Group, Vehicle System, Vehicle System Instance, Function, Function Instance,
e.g.
• The FX -J1939 is configured to exchange PGN 45312 with node 130.
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(ECU name HD0FE.FF00.FFFF.FFFF).
• Node address 130 is claimed by a different ECU.
• ECU (ECU name HD0FE.FF00.FFFF.FFFF) claims node address 131.
• Now the FX
(Where ECU name HD0FE.FF00.FFFF.FFFF is assigned to node address 130)
• The FX -J1939 adjusts the configuration to ensure PGN 45312 is from now on exchanged with node 131.
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Note
If not using the remote node address to ECU name assignment, set K-1 to Node address.
BFM No.
BFM #3000
Node address
BFM #3001 Arbitrary address capable field
BFM #3002 Industry Group
BFM #3003 Vehicle System
BFM #3004 Vehicle System Instance
BFM #3005 Function
BFM #3006 Function Instance
BFM #3007 ECU instance
BFM #3008 Manufacturer Code
BFM #3009 Identity Number (LW)
BFM #3010 Identity Number (HW)
BFM #3011
Node address
BFM #3012 Arbitrary address capable field
BFM #3013 Industry Group
BFM #3014 Vehicle System
BFM #3015 Vehicle System Instance
BFM #3016 Function
BFM #3017 Function Instance
BFM #3018 ECU instance
BFM #3019 Manufacturer Code
BFM #3020 Identity Number (LW)
BFM #3021 Identity Number (HW)
46

5.22 [BFM #3000 to #3879] Configuration of Remote Address to ECU Name Assignment

-J1939 supports the following table where the remote source/destination node address
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-J1939 configuration can be assigned to the unique ECU name of the Remote node.
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ECU instance, Manufacturer Code and Identity Number, refer to Section 5.17
-J1939 checks the Table in BFM #3000 to #3879.
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Description
*1
*1
-J1939 will adjust its internal configuration to ensure that
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Bit Length Default Value
8 bit K-1 (Not used)
1 bit K0
3 bit K0
7 bit K0
4 bit K0
8 bit K0
5 bit K0
3 bit K0
11 bit K0
K0
21 bit
K0
8 bit K-1 (Not used)
1 bit K0
3 bit K0
7 bit K0
4 bit K0
8 bit K0
5 bit K0
3 bit K0
11 bit K0
K0
21 bit
K0
5 Allocation of Buffer Memories
-J1939, is not used
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Remote ECU
1st remote node address to
ECU name assignment
2nd remote node address to
ECU name assignment