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11.2
Diagnostic messages to the S7 controller
11.2.1
Events that trigger a diagnostic message
Diagnostics
The PN/CAN LINK sends diagnostic information to the S7 controller with the usual PROFINET
methods.
A distinction is made here between diagnostic messages that refer to the entire PN/CAN LINK
and those that affect individual modules.
Many diagnostic messages are the result of error events and not error states. This is why they
are withdrawn immediately once they have been signaled to the S7 controller ("Incoming"
message and "Outgoing" message).
The tables below provide an overview of the following for the different operating modes of
the PN/CAN LINK:
• Events that trigger a diagnostic message
• Events that cause a pending diagnostic message to be withdrawn
• The associated component
The diagnostic messages including description are listed in the section Diagnostic messages
(Page 146). The descriptions also include instructions and information on error correction.
SIMATIC PN/CAN LINK
Operating Instructions, 03/2022, A5E39895388-AC
11.2 Diagnostic messages to the S7 controller
Diagnostics
143
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