Selection of process data
The process data of the EL6711-0010 are set up in TwinCAT. The PDOs can be activated or deactivated separately. The "Process data" tab is used for this (visible only if the terminal is selected on the left).
If the terminal is selected in the project tree (A), the Process Data tab (B) shows the PDO selection. The two SyncManagers of the inputs (SM3) and outputs (SM2) can be changed (C). If one of the two is clicked on, the PDO possible for this SyncManager appears underneath it (D). PDOs that are already activated have an activated checkbox in front of them; this is activated by clicking on it. The process data which then belong to the device are listed underneath it.
Predefined PDO Assignment
In order to simplify the configuration, typical configuration combinations of process data are stored in the device description. The predefined configurations can be selected in the process data overview. Therefore, the function is only available if the ESI/XML files are stored on the system. The predefined PDO assignments only affect the remote I/Os, i.e. the bit data (RX and RY) but not the remote registers (RWw and RWr).
The following predefined PDO assignments are available for selection:
- Bit as byte
- Process data of type byte instead of bit can be appended.
- Map one, two, three or four bit Pdo
- Depending on the selection, one, two, three or four PDO assignments are created in the process image
- Only process data of type bit may be appended
- The number of created process data must be a multiple of 8
- The sum of all applied bit process data must not exceed 896 bits (max. CC-Link Version 2). Therefore
- the maximum number of permitted entries for "Predefined PDO Assignment; 'Map one bit Pdo', 'Map two bit Pdo' and 'Map three bit Pdo'" is 255;
- the maximum number of permitted entries for "Predefined PDO Assignment. ‚Map four bit Pdo'" is 131