Features - Siemens SIMATIC PN/J1939 LINK Operating Instructions Manual

System overview

3.2 Features

3.2 Features
General characteristics of PN/J1939 LINK
● 1 J1939 connector (CAN, 9-pin D-SUB connector)
● 2 PROFINET interfaces (integrated switch) enable PROFINET line operation according to
Conformance Class B (CC-B).
● The PN/J1939 LINK can be used in the line, star and tree network topologies.
● PN/J1939 LINK is configured in the TIA Portal via a GSDML file.
● Firmware update via SAT (SIMATIC Automation Tool)
J1939 features
● J1939 protocol with physical layer according to ISO 11898-2 (high-speed CAN)
● Implementation according to SAE J1939/11/14 standard
● Transmission rates of 100 Kbps, 250 Kbps and 500 Kbps are supported by the J1939.
● The maximum permissible cable length of the J1939 network is 40 m (depending on data
transmission rate, cable cross-section, number of nodes).
● PN/J1939 LINK represents an Electronic Control Unit (ECU) and contains a Controller
Application (CA)
● PN/J1939 LINK supports "Address Claiming" (ACL)
● PN/J1939 LINK supports the definition of user-specific parameter groups (PGN)
● Peer-to-peer and broadcast communication
● Transport protocol BAM (Broadcast Announce Message) and CMDT (Connection Mode
Data Transfer) for larger volumes of data
● PN/J1939 LINK can read DM1 diagnostic messages from other connected ECUs
● PN/J1939 LINK can write and read parameter groups from the S7 user program.
Configuration limits of the PN/J1939 LINK
● PN/J1939 LINK can address up to 30 ECUs in the J1939 network
● PN/J1939 LINK can address up to 253 CAs in the J1939 network
Limits specified by PROFINET or the J1939 protocol
The maximum data length that can be exchanged cyclically via PROFINET is 1440 bytes per
transmission direction. The values that can be achieved with PN/J1939 LINK in practice are
lower and depend on the controller used and the configuration.
The user can send data records acyclically up to a length of 1785 bytes via the S7 program.
Proxy modules with configurable data length are available for this purpose (see Cyclic and
acyclic data exchange (Page 22)). The maximum length of 1785 bytes is specified by the
J1939 protocol.
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SIMATIC PN/J1939 LINK
Operating Instructions, 12/2018, A5E45307564-AA