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3.9.2 Diagnostic data
Diagnostic messages are distinguished between DXP-diagnostics, IO-Link-master diagnostics and
IO-Link-device diagnostics.
The "PD
invalid
" diagnostic (process data invalid) can be sent from both devices, IO-Link master or IO-
Link device.
DXP diagnostics
Diagnostic messages of the universal digital channels (DXP13 and DXP15)
IO-Link master diagnostics
The IO-Link-master reports problems within the IO-Link communication.
IO-Link device diagnostics
The device diagnostics map the IO-Link Event codes (according to the IO-Link specification) sent
from the IO-Link devices
to the diagnostic telegram of the master.
Event codes can be read from the connected devices by using appropriate device tools (e.g.
IODD-Interpreter).
Further information concerning the IO-Link Event Codes and their meaning can be found in the
IO-Link specification or in the documentation of the connected devices.
Diagnostic telegram
channel Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Basic
DXP diagnostics
0
-
VERRV1
C1213
1
-
2
3 SCO15 - SCO13 -
IO-Link Device diagnostics Master diagnostics
IO-Link port 1 0 EVT1 EVT2 PDINV HWER DSER CFGER PPE -
1
GENER OLV VHIGH VLOW ULVE LLVU OTMP PRMER
IO-Link port 2 2 + 3 assignment similar to port 1
Bit Meaning Remedy
DXP diagnostics
VERRV1
C1213
0-
1 Overcurrent supply VAUX1 at Channel 12/13
SCO x Overcurrent output
0 No overcurrent
1 Overcurrent at the output (if the DXP channel is used as output)
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