Preselection of process data
An EtherCAT device usually offers several different process data objects (PDO) for input and output data, which can be configured in the System Manager, i.e. they can be activated or deactivated for cyclic transmission. See further below for the corresponding overview. Attention is thereby to be paid to the compatibility of input and output PDO.
From TwinCAT 2.11 with the EtherCAT devices intended for the purpose according to the ESI/XML description, the process data for input and output can be activated simultaneously by appropriate predefined sentences, "Predefined PDO".
On the "Process data" tab, the EL2595 has
the following 'predefined PDO' sentences:
In detail the sentences are composed as follows:
Operation mode | Name | SM2, PDO assignment | SM3, PDO assignment |
|---|---|---|---|
SM-synchronous “frame-triggered” | Standard digital output | 0x1600 | 0x1A00 |
Standard digital output with InfoData | 0x1600 | 0x1A00 | |
External trigger input | 0x1600 | 0x1A00 | |
External trigger input with InfoData | 0x1600 | 0x1A00 | |
DistributedClocks-triggered | DC Digital output | 0x1600 | 0x1A00 |
DC Digital output with InfoData | 0x1600 | 0x1A00 |