ICP DAS USA GW-7228 Quick Start Manual page 5

J1939 I/O Configuration
The following figure is a PGN definition about Electronic Transmission
Controller, we want to receive the Transmission Output Shaft Speed from the
transmission and send the Transmission Input Shaft Speed to the transmission via
the GW-7228. The following table shows the current planning.
Figure 8: Example of a parameter group definition of SAE J1939/71
Table 1: Configuration data of J1939 and Modbus
Parameters
Send
Input Shaft 61442(Dec)
Speed F002(Hex)
Receive
Output Shaft 61442(Dec)
Speed F002(Hex)
Note:PGN/Data Length(Bytes)/Byte Oder in J1939 Data Field
=> Transmission manufacturers provide the information required
Byte Order in MODBUS
=> User-defined Modbus address
Data
Length
PGN
(bytes)
2
2
Byte Order Byte Order
In J1939
Data Field MODBUS
5
1
GW-7228 Quick Start v1.2 2011/05
MODBUS
in
Address
0 40001
0 30001
5 5 5 5 / / / / 8 8 8 8