Siemens SIMATIC PN/J1939 LINK, Руководство по эксплуатации

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Functions
4.6 Response to errors
SIMATIC PN/J1939 LINK
26
Operating Instructions, 12/2018, A5E45307564-AA
4.6 Response to errors
Diagnostic resource
The device provides various tools to isolate the cause. These tools are listed below:
Diagnostic resource Description
LED display PN/J1939 LINK signals its status with the LEDs on the front of the enclo-
sure. The meaning of the LEDs is described in section Status LEDs
(Page 53).
SIMATIC diagnostics Information on the events that trigger a diagnostics alarm is available in the
section Events that trigger a diagnostic message (Page 57). The section
Diagnostic messages (Page 58) contains a description of the cause of the
error and the possible corrective measures.
Status bit/byte See section Cyclic and acyclic data exchange (Page 22)
Behavior when communication with S7 controller / J1939 fails
If communication between the PN/J1939 LINK and S7 controller fails, the PN/J1939 LINK
changes to the state "not configured". In this state, the PN/J1939 LINK waits for new
configuration data from the controller. PN/J1939 LINK cannot be operated in this state.
If communication between PN/J1939 LINK and the CAN network fails, the CAN controller
goes into the "Bus off" operating state (see Control and status information (Page 25)). The
last PGN data remains available. PN/J1939 LINK remains operable.
Module failure
Module failures are indicated by the status LEDs. If necessary, corresponding diagnostics
messages are also output. These can then be taken from the diagnostic buffer of the
S7 controller either immediately or during the next start-up.
Note
An Ethernet switch is integrated in the PN/J1939 LINK. This switch is also operational in an
error state so that the PROFINET network continues to run.