Diagnostics
10.2 Diagnostic messages to the S7 controller
SIMATIC PN/J1939 LINK
58
Operating Instructions, 12/2018, A5E45307564-AA
10.2.2
Diagnostic messages
The table below lists the following information:
●
Message text assigned to diagnostics
●
Causes of errors and possible solutions
Diagnostic messages
Table 10- 7 Diagnostic messages
Module/submodule
for which the diag-
nostic information
is signaled
Channel diagnostics
error
Cause of error and possible solution
Manager
CAN bus off
CAN messages can no longer be sent or received.
Check for errors in the hardware installation (e.g.
terminating resistor) or communication settings (e.g.
transmission rate).
Manager
CAN error passive
In this state, the device can no longer initiate repeti-
tion of defective CAN messages.
Check for errors in the hardware installation (e.g.
terminating resistor) or communication settings (e.g.
transmission rate). The error can also occur if no
other devices are connected to the CAN bus.
Manager
CAN Rx buffer overflow Received CAN messages were lost.
Reduce the CAN transmission rate, increase the
PROFINET cycle time or reduce the PROFINET IO
data to be transmitted.
Manager
CAN Tx buffer overflow CAN messages to be sent could not be sent and
were discarded.
This is caused by too much CAN communication
traffic or when other problems occurred in the CAN
communication ("Bus off" or "Error passive" state). If
there is neither "Bus off" nor "Error passive", try re-
ducing the amount of communication traffic or in-
creasing the CAN bit rate.
Manager
Hardware fault detected:
- ({1:x})
Hardware faults were detected when switching on
the module.
The module must be replaced.
Manager
Internal communication
error
Received and sent CAN messages might have been
lost.
Check for communication problems caused by EMI.
If these problems can be excluded, there may be a
hardware fault and the module must be replaced.
Manager
Invalid address
The configured source address is occupied. The null
address was assigned via the "Address Claiming"
procedure.
Change the source address set in the module pa-
rameters.
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