Diagnostics alarms
5.2 Diagnostics alarms
Communication module CM 4xIO-Link 4xM12(6ES7147-5JD00-0BA0)
Manual, 10/2017, A5E32352322-AE
27
Valid for IO-Link port in SIO mode.
Table 5- 4 Status displays of the Q1, Q2, Q3, and Q4 LEDs
Process signal = 0 in SIO mode, deactivated or in IO-Link mode
Process signal = 1 in SIO mode
For each diagnostic event, a diagnostics alarm is issued and the DIAG LED flashes red on
the communication module. You can read out the diagnostics alarms, for example, in the
diagnostics buffer of the CPU. You can evaluate the error codes with the user program.
Table 5- 5 Error types
Meaning (IO-Link error code)
Short-circuit 1
H
• Short-circuit at the process cables on the IO-Link device (1804
H
)
X
• Short-circuit on IO device (7710
H
)
X
Undervoltage 2
H
• Supply voltage too low (5111
H
, 5112
H
)
X
Overvoltage 3
H
• Supply voltage too high (5110
H
)
X
Overtemperature 5
H
• Temperature exceeded on master (1805
H
)
X
• Temperature exceeded on device (4000
H
, 4210
H
)
X
Wire break 6
H
• No IO-Link device connected
• There is a break on the signal line to the IO-Link device
• IO-Link device cannot communicate due to a different error
(1800
H
)
X
Overflow 7
H
• Process tag range exceeded (8C10
H
)
• Measuring range exceeded (8C20
H
)
X
Underflow 8
H
• Process tag range too low (8C30
H
)
X
Error 9
H
• All IO-Link error codes which are not listed here are mapped to
this PROFIBUS DP error
X
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