SMC Networks PF3A703H-L Operation Manual page 89

Problem Possible
Error indication
Effect of line
pressure
fluctuation
because
hysteresis is too
The operation is
narrow.
unstable.
(chattering)
Incorrect wiring/
broken lead wire
Product failure
○Troubleshooting list (IO-Link communication)
Problem
Description
IO-Link indicator
light
: OFF
IO-Link indicator
light
: Flashing
IO-Link indicator
light
: Flashing
Data is swapped
by byte.
1: When the product is connected to the IO-Link master with version other than "V1.1", an error will be generated.
Investigation method
causes
Check the set flow rate (hysteresis).
(1) Check the power supply wiring.
(2) Check if there is bending stress
applied to any part of the lead wire.
(bending radius, tensile force to the
lead wire)
Problem possible
causes
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.
Program data
- assignment is
incorrect.
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 that the Endian
type on the master upper
level communication
transmission format is Big
Endian type or Little
Endian type.
-88-
Countermeasure
Check the flow rate setting.
(1) Check and correct the wiring.
(2) Correct the wiring.
(Reduce the tensile force or
increase the bending radius.)
Replace the product
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
version to the device.
Release the data storage
access lock.
Or deactivate the setting of
the data storage backup
level of the master port.
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 71 for the
Endian type of the upper
level communication)
No.PF※※-OMX0002
1