Help with Malfunctions
EN-US · 30.30.01.00956 · 03 · 05/22
35 / 44
10 Help with Malfunctions
Fault
Cause
Measure
Master or peripheral
power supply disturbed
Connection to IO-Link master with
IO-Link class-B port
4
Connection to IO-Link class A port
No output signal
Incorrect electrical connection
4
Check electrical connection and pin
assignment
Transistor function (PNP/NPN) not
appropriate for the application
4
Adjust the transistor function (PNP/
NPN) to the device's electrics
Switching logic inverted
4
Adjust the NO/NC switching point
logic
No IO-Link communica-
tion
Incorrect electrical connection
4
Check electrical connection and pin
assignment
Master not correctly configured
4
Check configuration of the master
to see whether the port is set to IO-
Link
IODD connection does not work
4
Check for the appropriate IODD
No NFC communication
No NFC connection between
switch and reader (e.g. cell phone)
4
Hold the reader very close to the in-
tended position on the switch
NFC function on reader (e.g. cell
phone) not activated
4
Activate NFC function on reader
(e.g. cell phone)
NFC function is deactivated via IO-
Link
4
Activate NFC function on reader
Write operation canceled
4
Hold the reader at the intended po-
sition on the product for longer
No parameters can be
changed using the NFC
function
The PIN for NFC write protection is
activated via IO-Link
4
Enable the NFC write permissions
via IO-Link.
No display on the
screen
ECO mode activated
4
Press any button or deactivate ECO
mode
Incorrect electrical connection
4
Check electrical connection and pin
assignment
Display shows error
code
See the “Error codes” table
4
See the “Error codes” table in the
chapter
IO-Link warning mes-
sage “Leakage too
high” although han-
dling cycle is working
optimally
Limit value L-x (permissible leak-
age per second) set too low
4
Determine typical leakage values in
a good handling cycle and set as
limit value
Limit values SPx and rPx for leak-
age measurement set too low
4
Set limit values in such a way that
there is a clear differentiation be-
tween the neutral and suction sys-
tem states
IO-Link warning mes-
sage “Leakage too
high” does not appear
although there is high
leakage in the system
Limit value L-x (permissible leak-
age per second) set too high
4
Determine typical leakage values in
a good handling cycle and set as
limit value
Limit values SPx and rPx for leak-
age measurement set too high
4
Set limit values in such a way that
there is a clear differentiation be-
tween the neutral and suction sys-
tem states
