Omron NXR Series User Manual page 94

7 Functions of IO-Link I/O Hubs
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
Port£ Pin4 External
Load Disconnection
Detection Enable/
Disable
Port£ Pin2 External
Load Disconnection
Detection Enable/
Disable
Port£ Sensor Dis-
connection Detec-
tion Enable/Disable
*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.
7-4
*1
Description
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 £.
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 £.
This setting enables or disables the dis-
connection detection for the sensor con-
*4*5
nected to port £.
De-
*1
fault
value
00 hex 00 hex:
Disable
01 hex:
Enable
*2
00 hex 00 hex:
Disable
01 hex:
Enable
*3
00 hex 00 hex:
Disable
01 hex:
Enable
NXR-series IO-Link I/O Hub User's Manual (W620)
Setting Update
Unit
range timing
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ately
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ately
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