Siemens SIMATIC PN/J1939 LINK Operating Instructions Manual page 18

Functions
4.1 J1939 protocol
Network address (Source Address)
The address space contains 256 possible network addresses.
Address
0 to 127
128 to 247
248 to 253
254
255
The address range from 0 to 253 is available for configuring PN/J1939 LINK. See
PN/J1939 LINK assign parameters (Page 47).
J1939 device name (Name Field)
The device name is a numeric 64-bit value. The name contains the following information:
● Identification of the device and the device function
● Determines whether the PN/J1939 LINK can select a different network address if it loses
"Address Claiming".
● Priority of the device for "Address Claiming"
The device name is composed as follows:
J1939 Name Field
Arbitrary Address Capable
Industry Group
Vehicle System Instance
Vehicle System
Reserved
Function
Function Instance
ECU Instance
Manufacturer Code
Identity Number
These parameters or the corresponding device name are configured in the TIA Portal. See
PN/J1939 LINK assign parameters (Page 47).
16
Meaning
Pre-defined address
Freely available addresses
Pre-defined address
Null address
Global address (Broadcast)
1-bit
3-bit
4-bit
7-bit
1-bit
8 bit
5-bit
3-bit
11-bit
21-bit
SIMATIC PN/J1939 LINK
Operating Instructions, 12/2018, A5E45307564-AA