IP67 IO-Link Modules for EtherNet/IP
6. IO-Link Features & Behaviors
IO-Link connection
At the module start up, IO-Link ports are not active. IO-Link connection process starts at reception of the
Forward Open frame from EIP Scanner that includes the IO-Link port configuration.
IO-Link connection will be established as follow:
1. ID validation
2. Data storage mechanism
3. Direct Param Page2 (For IO-Link device V1.0 only).
4. IO-Link connection & IO Data Exchange
The transition from one step to the next is processed only in case of success.
ID Validation
IO-Link provides three levels for the validation of the identity of an IO-Link Device per IO-Link port to accept
the IO-Link connection.
o No Check: no identification validation is done
o Compatible: Validation is successful if the Vendor ID and the Device ID stored into the IO-
Link device match with the “Device ID” and “Vendor ID” value into the configuration assembly.
Supported by IO-Link devices V1.1 & V1.0
o Identical: Validation is successful
▪ If the Vendor ID & the Device ID stored into the IO-Link device match with the “Device
ID” and “Vendor ID” into the configuration assembly.
▪ And if the Serial Number associated to the IO-Link port matches the serial number
stored into the IO-Link device. Supported by IO-Link devices V1.1 only
If the validation is not successful, please check the IO-Link status in the input assembly to know the failure.
You can also check it from the web server. Refer to the chapter IO-Link channel diagnostic
Vendor ID / Device ID
This is the Vendor ID / Device ID of the connected IO-Link device.
As described above, those parameters are used for the validation. They can be found into the manufacturer’s
user manual. If the Vendor ID is set, the Device ID must be set as well because both are always checked
together (and vice and versa).
Example:
The vendor ID of Molex IO-Link Hub 16 inputs (TEDIO-8DOP-808) is a 16-bits value (2 bytes) and the Device
ID is a 24-bits value (3 bytes)
Vendor ID: 0x0127
Device ID: 0x243000
The mapping is big endian format as follows:
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