Interrupts, diagnostics, error, and system messages
5.3 Alarms
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
Equipment Manual, 10/2020, A5E03576904-AE
37
5.3.4 Invalid configuration states of the ET 200SP on PROFINET IO
Invalid configuration states
The following invalid configuration states of the ET 200SP distributed I/O system lead to the
failure of the IO device or prevent the exchange of user data with the I/O modules.
• Number of modules exceeds maximum configuration
• Faulty backplane bus (e.g. defective BaseUnit). ET 200SP backplane bus interruptions do
not trigger an interrupt.
• At least one I/O module is installed in a different BaseUnit than the one configured in the
parameters.
• Missing server module
• Invalid or incorrectly configured BusAdapter
Note
If you drag more than one I/O module or the server module the node will stop. All I/O
modules of the ET
200SP distributed I/O system fail (substitute value behavior) but the
interface module is still exchanging data.
Revoking the station stop (by correcting the invalid configuration state) leads to a brief failure
of the ET 200SP distributed I/O system and automatic restart.
See also
Status and error displays (Page 26)
Channel diagnostics (Page 33)
5.3.5 Failure of supply voltage L+ at BaseUnit BU...D
Failure of the supply voltage L+
The I/O modules react as follows to failure of the supply voltage L+ on the BaseUnit BU...D:
• If an I/O module is removed during failure of the supply voltage, a pull alarm is generated.
• If an I/O module is installed during failure of the supply voltage, an insert alarm is
generated.
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