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8 Troubleshooting
Pin 4/Pin 1 sta-
tus
Yel-
Red
low
---
Flash-
ing
Not lit Not lit
---
---
---
---
---
---
Note The "---" of the indicator status indicates that the status is unstable.
8-8
Pin 2 status
Yel-
Red
low
---
---
When pin 4 or
pin 2 is set to
input
When pin 4 is
set to output
---
---
When pin 4 is
set to input
When pin 4 is
set to output
Lit
---
When pin 2 is
set to input
When pin 2 is
set to output
---
Flash-
When pin 2 is
ing
set to output
Not
Not lit
When pin 2 is
lit
set to input
When pin 2 is
set to output
Hub status
Sensor Discon-
The I/O ca-
nected Error oc-
ble is bro-
curred to pin 1
ken.
Sensor power
There is a
supply short-cir-
short-circuit
cuit error occur-
in the I/O ca-
red to pin 1
ble.
External load dis-
The I/O ca-
connected error
ble is bro-
occurred to pin 4
ken.
External load
There is a
short-circuit error
short-circuit
occurred to pin 4
in the I/O ca-
ble.
Sensor power
supply short-cir-
cuit error occur-
red to pin 1
Pin 4 input is
---
OFF
Pin 4 output is
---
OFF
Pin 2 input is ON
---
Pin 2 output is
---
ON
External load dis-
The I/O ca-
connected error
ble is bro-
occurred
ken.
External load
There is a
short-circuit error
short-circuit
occurred
in the I/O ca-
ble.
Pin 2 input is
---
OFF
Pin 2 output is
---
OFF
NXR-series IO-Link I/O Hub User's Manual (W620)
Cause
Correction
Check the I/O ca-
ble to see if it is
broken. If the ca-
ble is broken, re-
place it.
Check the wiring
for short circuit of
sensor power
supply.
Check the I/O ca-
ble to see if it is
broken or check if
the connected ex-
ternal device is
faulty.
Check the wiring
for short circuit of
the connected ex-
ternal device.
Check the wiring
for short circuit of
sensor power
supply.
---
---
---
---
Check the I/O ca-
ble to see if it is
broken or check if
the connected ex-
ternal device is
faulty.
Check the wiring
for short circuit of
the connected ex-
ternal device.
---
---
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Table of Contents
Troubleshooting
