AM2432: The question about the long processing time of EtherCAT mailbox data frames

Part Number: AM2432


hello,

The SDK version is 09.02.00.15 and the example is ethercat_slave_beckhoff_ssc_demo.

When testing email communication, we found that the interval between the frame of the email request sent by the master and the frame returned by the slave after processing was about 2ms. As shown in the following picture, the time it takes for cnt to change from 0 to 1.

Why does the processing time take so long?

We tested other chips and found that the processing time was probably within 200us.

b8badb3d8e4e476e81bf59ee6992396e.png