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IO-Link Master EtherNet/IP Reference Manual: 2000589 Rev. A Chapter 3. EtherNet/IP CIP Object Definitions - 41
PDI (Process Data Input) Transfer Object Definition (72 hex)
3.2. PDI (Process Data Input) Transfer Object Definition (72 hex)
The PDI Transfer object defines the attributes by which the PLC can request the PDI data block from the IO-
Link Master.
3.2.1. Class Attributes
The following table displays Class Attributes for the PDI Transfer Object Definition (72 hex).
3.2.2. Instance Attributes
The following table displays Instance Attributes for the PDI Transfer Object Definition (72 hex).
3.2.3. Common Services
The following table shows Common Services for the PDI Transfer Object Definition (72 hex).
3.2.4. Instance Attribute Definitions - Attribute 1 to 4-PDI Data Blocks
These attributes provide access to the PDI data blocks.
• Get Attribute Single requests return the PDI data block for a specific port.
• Get Attribute All requests return all PDI data blocks from the IO-Link Master.
All PDI data is returned in the configured PDI format (8-bit, 16-bit or 32-bit). Refer to 3.2. PDI (Process Data
Input) Transfer Object Definition (72 hex) on Page 41 for a detailed explanation of the PDI data block.
Attribute ID Name Data Type Data Value(s) Access Rule
1 Revision UINT 1 Get
2
Max Instance UINT 1 Get
3
Num Instances UINT 1 Get
Attribute ID Name Data Type Length Data Values Access Rule
1 Port 1 PDI data block Array of BYTEs 4-36 bytes 0-255 Get
2
Port 2 PDI data block Array of BYTEs 4-36 bytes 0-255 Get
3
Port 3 PDI data block Array of BYTEs 4-36 bytes 0-255 Get
4
Port 4 PDI data block Array of BYTEs 4-36 bytes 0-255 Get
Service Code Implemented in Class Implemented in Instance Service Name
01 hex Yes Yes Get_Attributes_All
0E hex Yes Yes Get_Attribute_Single