Precautions for Correct Use
• The sensor disconnection detection detects the disconnection of the power line to the three-
wire sensor but cannot detect the disconnection of the signal line.
• Depending on the connected sensor or the connected external load, the detection function
may falsely detect disconnection as follows:
For sensor disconnection detection
The detection function falsely detects disconnection when an input device whose current con-
sumption is 0.2 mA or less (dry contacts such as limit switches and relays, some of two-wire
proximity sensors) is used. Be sure to turn OFF this function.
For load disconnection detection
The detection function falsely detects disconnection when an external load whose load cur-
rent is 3 mA or less is used. Be sure to turn OFF this function.
Settings
The following shows the settings for the I/O cable disconnection detection.
The default values are Disable so that the disconnection detection does not work during a setup
process, etc. when cables are not connected. When you use the disconnection detection, set the
disconnection detection settings to Enable.
If you do not want to detect disconnection when no external device is connected, set this function
to Disable.
Setting
Description
De-
fault
value
Setting
range
Unit
Update
timing
Port
£
Pin4 External
Load Disconnection
Detection Enable/
Disable
This setting is applicable only to the Digi-
tal I/O Variable Hub.
This setting enables or disables the dis-
connection detection for the external load
connected to pin 4 of port
£
00 hex
00 hex:
Disable
01 hex:
Enable
---
Immedi-
ately
Port
£
Pin2 External
Load Disconnection
Detection Enable/
Disable
This setting is applicable only to the Digi-
tal I/O Variable Hub.
This setting enables or disables the dis-
connection detection for the external load
connected to pin 2 of port
£
00 hex
00 hex:
Disable
01 hex:
Enable
---
Immedi-
ately
Port
£
Sensor Dis-
connection Detec-
tion Enable/Disable
This setting enables or disables the dis-
connection detection for the sensor con-
nected to port
£
.
00 hex
00 hex:
Disable
01 hex:
Enable
---
Immedi-
ately
*1.
£
refers to port numbers 1 to 8.
*2.
When pin 4 of port
£
is set to input, the function does not work regardless of the set value.
*3.
When pin 2 of port
£
is set to input, the function does not work regardless of the set value.
*4.
The function cannot separately detect disconnection of pin 4 and disconnection of pin 2.
*5.
When pin 2 and pin 4 of a Digital I/O Variable Hub are in output mode, the function does not work re-
gardless of the set value.
You can configure the function by one of the following two procedures.
• Configure the function from CX-ConfiguratorFDT
• Configure the function through message communications from the Controller to the IO-Link de-
vice
Refer to the
NXR-series IO-Link Master Unit for EtherNet/IP User’s Manual (Cat. No. W619)
for de-
tails on how to configure the function through message communications.
7 Functions of IO-Link I/O Hubs
7-4
NXR-series IO-Link I/O Hub User’s Manual (W620)
Summary of Contents for NXR Series
Page 6: ...Manual Structure 4 NXR series IO Link I O Hub User s Manual W620 ...
Page 26: ...Revision History 24 NXR series IO Link I O Hub User s Manual W620 ...
Page 34: ...1 Features and System Configuration 1 8 NXR series IO Link I O Hub User s Manual W620 ...
Page 90: ...6 Process Data and Service Data 6 12 NXR series IO Link I O Hub User s Manual W620 ...
Page 108: ...7 Functions of IO Link I O Hubs 7 18 NXR series IO Link I O Hub User s Manual W620 ...
Page 131: ...I Index I 1 NXR series IO Link I O Hub User s Manual W620 I ...
Page 133: ......
