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-91-
No.PF
※※
-OMZ0002
○
Troubleshooting list (IO-Link communication)
Problem
Problem possible
causes
Investigation method
Countermeasures
Description
IO-Link indicator
light
: 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.
IO-Link indicator
light
: Flashing
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.)
IO-Link indicator
light
: Flashing
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.
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.