To access this dialog:
From the Add PDO dialog, click the Add button below the Entries box.
From the Edit PDO dialog, select an entry and click the Edit button, or, click the Add button.
The Add PDO Entry or Edit PDO Entry dialogs are used to change the data items in a PDO mapping. They are frequently used during network configuration to define the data to be communicated between the RMC MainDevice and SubDevices. Each SubDevice will have an initial PDO mapping set determined by the ESI file. Sometimes, that mapping will need to be modified by adding or removing data items.
Dialog Components
General section:
Name:
Displays the PDO entry’s name from the SubDevice’s ESI file. This can be edited to a user defined name. If the PDO Entry is also assigned a tag name (on the Process Data tab), then this name appears only in the PDO Mapping tab and the Process Data tab. If the PDO Entry is not assigned a tag name, then this name, along with the SubDevice name and PDO Name, will appear in the Expression browser, in the Indirect Data Map Description column, and in the plots. This name becomes very long, so it is preferable to assign a tag name.
Comment:
Allows the user to add documentation comments. The comment appears only in this dialog and in the Edit PDO dialog.
Settings section:
This section displays the address and data type information of the selected object in the CoE Object Dictionary section. Normally, you will not make changes to this section because you will select an object in the CoE Object Dictionary list. However, if the SubDevice does not have a CoE Object Dictionary, or the desired object doesn’t appear in the list, use this section to enter the address and datatype of the object to add or edit.
Index and SubIndex:
The address of the Entry data item. Selecting an item in the CoE Object Dictionary box will change these. Do not edit this unless the SubDevice does not have a CoE Object Dictionary, or if you wish to address an object that doesn’t appear in the CoE Object Dictionary list.
Use the Dec and Hex buttons to change the number display between decimal and hexadecimal.
Datatype and Bit Length:
The datatype and bit length of the object. Do not edit this unless the SubDevice does not have a CoE Object Dictionary, or if you wish to address an object that doesn’t appear in the CoE Object Dictionary list.
Show Base Datatypes:
Checking this box will display all the available datatypes in the Datatype box. Checking this box will also disable the CoE Object Dictionary section.
CoE Object-Dictionary section:
Displays all the entries available for mapping, with their indices and datatypes. The entries can be expanded to display any SubIndexes , if there are any defined.
When Adding a PDO Entry
These instructions apply when this dialog was opened to add a PDO Entry.
Select the desired data item from the CoE Object-Dictionary box.
If the entry has SubIndexes defined, expand the data entry and select the desired SubIndex.
Enter a documentation comment, if needed.
Click OK to accept your changes.
If the SubDevice does not have a CoE Object Dictionary, or if the desired object doesn’t appear in the CoE Object Dictionary list, use the Settings section to enter the address (Index and SubIndex), Datatype and Bit Length of the object to add.
When Editing a PDO Entry
These instructions apply when this dialog was opened to edit an existing PDO Entry.
In the CoE Object-Dictionary box, select the desired data item.
Edit the Comment or Name, if desired.
Click OK to apply the changes.
If the SubDevice does not have a CoE Object Dictionary, or if the desired object doesn’t appear in the CoE Object Dictionary list, use the Settings section to edit the address (Index and SubIndex), Datatype and Bit Length of the object to edit.
See Also
EtherCAT Overview | EtherCAT SubDevice information (ESI) File | CoE Object-Dictionary | Add/Edit PDO Dialog
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