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