Functions
4.1 J1939 protocol
SIMATIC PN/J1939 LINK
16
Operating Instructions, 12/2018, A5E45307564-AA
Network address (Source Address)
The address space contains 256 possible network addresses.
Address
Meaning
0 to 127
Pre-defined address
128 to 247
Freely available addresses
248 to 253
Pre-defined address
254
Null address
255
Global address (Broadcast)
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 1-bit
Industry Group
3-bit
Vehicle System Instance
4-bit
Vehicle System
7-bit
Reserved
1-bit
Function
8 bit
Function Instance
5-bit
ECU Instance
3-bit
Manufacturer Code
11-bit
Identity Number
21-bit
These parameters or the corresponding device name are configured in the TIA Portal. See
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