6 J1939 Communication Mode
6.2 [BFM #500 to #973] Configuration Area
51
FX
3U
-J1939 User's Manual
1
Introduc
tion
2
Specifi
cations
3
Inst
allati
on
4
Wi
rin
g
5
Al
lo
ca
tion of
Buf
fer
Memor
ies
6
J1939 C
omms
Mode
7
La
ye
r 2
C
omm
uni
cation
M
ode
8
PL
C RUN>
S
TOP
Me
ssag
es
9
Co
mmand
Interface
10
Comm
uni
cation
Setti
ngs
Proc
edure
1. PGN bit 17 to 0 (include Destination Address)
PGN to be transmitted is specified by the lower 18 bits (bit 0 to 17) as shown below. The PGN must also
include the Destination Address if applicable.
Note
For unused messages, set HFFFFFFFF to the PGN.
A PGN contains following four fields information. The PF field decides whether PDU 1 format or PDU 2 format
is used. In PDU 1 format (PF = K0 to K239), the PS field contains the destination address for the message. In
PDU 2 format (PF = K240 to K255), the PS field contains the group extension.
Note
• When a configuration parameter of the FX
3U
-J1939 requires a PGN (including destination address), the set
value must include the target node address if the PGN is using PDU 1 Format. If a PGN is using PDU 2
format, the PGN does not require target address.
e.g. PGN 59904 shall be used to request certain information from the network from node 30.
PGN 59904 is shown below.
PGN 59904 (HEA00)
As this PGN is PDU 1 format, it requires a destination address. PGN with added target address to PS field
is shown below.
Therefore, PGN (including destination address) is set to 59934 (HEA1E).
• Some PGNs can not be combined with certain destination addresses.
- Overview Rx Message valid and invalid settings
*1.
Address HFE is an invalid address for all user messages.
Bit 31............18
17
16
15........8
7......0
Not Used (Set bit 2 to 15 to OFF.)
EDP (Extend data page)
DP (Data page)
PDU Format (PF)
PDU specific (PS)
Bit
31............18
17
16
15........8
7......0
Not Used (Set bits 2 to 15 to OFF.)
EDP = OFF
DP = OFF
PF = EA (hex)
PS = 00 (hex)
Bit
31............18
17
16
15........8
7......0
Not Used (Set bit 2 to 15 to OFF.)
EDP = OFF
DP = OFF
PF = EA (hex)
PS = 1E (hex)
Format
Destination
DLC
Mode
Description
PDU1
Any
*1
0 to 8
J1939
communication
Setting Valid
PDU1
BFM #27
9 to 250
Setting Valid
HFF
Setting Valid (receive Broadcast messages)
Any other address
(not BFM #27, not HFF)
*1
Setting Invalid. DLC 9 to 250 requires a Point to Point
connection. As the "Destination" address is not equal
to BFM #27 or Broadcast, the FX
3U
-J1939 can not
participate in the Point to Point communication.
PDU2
-
0 to 250
Setting Valid
