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42 - Chapter 3. EtherNet/IP CIP Object Definitions IO-Link Master EtherNet/IP Reference Manual: 2000589 Rev. A
PDO (Process Data Output) Transfer Object Definition (73 hex)
3.3. PDO (Process Data Output) Transfer Object Definition (73 hex)
The PDO Transfer object defines the attributes by which the PLC can:
• Request the PDO data block from the IO-Link Master.
• Write PDO data block to the IO-Link Master.
3.3.1. Class Attributes
The following table displays the Class Attributes for the PDO Transfer Object Definition (73 hex).
3.3.2. Instance Attributes
The following table displays the Instance Attributes for the PDO Transfer Object Definition (73 hex).
3.3.3. Common Services
The following table displays the Common Services for the PDO Transfer Object Definition (73 hex).
3.3.4. Instance Attribute Definitions - Attribute 1 to 4-PDO Data Blocks
These attributes provide write access to the PDO data blocks.
• Get Attribute Single requests return the current PDO data block for a specific port.
• Get Attribute All requests return all current PDO data blocks from the IO-Link Master.
• Set Attribute Single allows writing the PDO data to one IO-Link port on the IO-Link Master.
• Set Attribute All messages allow writing of PDO data to all IO-Link ports on the IO-Link Master.
Attribute ID Name Data Type Data Value 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 Value Access Rule
1 Port 1 PDO data block Array of BYTEs 0-36 bytes 0-255 Get/Set
2 Port 2 PDO data block Array of BYTEs 0-36 bytes 0-255 Get/Set
3 Port 3 PDO data block Array of BYTEs 0-36 bytes 0-255 Get/Set
4 Port 4 PDO data block Array of BYTEs 0-36 bytes 0-255 Get/Set
Service Code Implemented in Class Implemented in Instance Service Name
01 hex Yes Yes Get_Attributes_All
0E hex Yes Yes Get_Attribute_Single
10 hex No Yes Set_Attribute_Single
02 hex No Yes Set_Attribute_All