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○Troubleshooting list (IO-Link communication)
Problem
Problem
No.
IO-Link indicator
light
1
: OFF
COM: OFF
IO-Link indicator
light
2
: Flashing
COM: OFF
IO-Link indicator
light
3
: Flashing
COM: ON
Data is swapped
4
by byte.
∗1: When the product is connected to the master with version "V1.0", error Er15 is generated.
Problem
possible causes
Description
incorrect wiring
―
Power supply
error from the
IO-Link master
Communication
is not
established.
IO-Link wiring
failure
IO-Link master
and product
version are not
matched.
Communication
mode is not
transferred to
the Operation
mode.
Backup and
restore required
during data
storage lock
Program data
―
assignment is
incorrect.
-87-
Investigation method
Check the connection of
the connector.
Check the power supply
voltage from the IO-Link
master.
Check the connection and
cable condition of the
IO-Link cable.
Check the IO-Link version
of the master and device.
Check the setting of the
data storage access lock
and data storage backup
level of the master.
Check the data storage
lock.
Check that the Endian
type on the master upper
level communication
transmission format is Big
Endian type or Little
Endian type.
Countermeasures
Correct the cable wiring.
Supply 18 to 30 VDC to
the IO-Link master.
Additionally tighten the
IO-Link cable. (Replace
the cable if it is broken.)
Align the master IO-Link
∗1
version to the device.
Release the data storage
access lock.
Or deactivate the setting of
the data storage backup
level of the master port.
Release the data storage
lock.
Assign the program data
based on the Endian type
of the transmission format
of the master upper level
communication.
Or set to the master byte
swap setting.
(Refer to page
63
for the
Endian type of the upper
level communication.)
No.PS※※-OMV0006-D
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