Pd Link - ASIX AX58200 User Manual

6-2 PD Link

TwinCAT XAE provides a powerful function that software variables could link to PD of EtherCAT slave. In this
application, we use many 4 PD links for access digital and analog input / output of EtherCAT slaves. We
declare the PD (Process Data) in ESI file for each known etherCAT slaves. TwinCAT XAE list all available
PDs of every etherCAT slaves after scanning them out. We can assign some software variable mapping to
some PD in the list under "IO" entry so that the application could access the PD directly. But please attention,
all PD links should have same data types (ex: BYTE → BYTE, WORD → WORD) between software variables
and PDs.
We illustrate procedure of PD link here. If you want to create a PD link, please follow below procedure:
⚫ Step 1: Right-click on specific software variable and select "Change Link..."
⚫ Step 2: Select specific PD and click "OK"
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GPIO / AIO User Guide
Reference Design User Guide
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AX58200