AM2434: AM2434 EthernetIP Latency calculations & Connection topology

Tool/software:

Hi Team,

We are planning to use AM2434BSFFHIALXR with Ethernet IP Field bus protocol along with SDK latest version(ind_comms_sdk_am243x_09_02_00_15).

We are interested to find out the Ethernet IP data transfer latency as we are trying to use Line Topology as it would be a optimized way of cabling for our application..

Our PLC scanning time is <= 1ms. Which connection Topology would you suggest (Line , Ring , Star ) ?

I am planning to use 4/5 nodes (Eval boards as a node) to measure the data transfer Latency and extrapolate it for 100 nodes in line Topology . Is this something that we can extrapolate ? 

Do you have any other methods/ application note or calculator to complete the EtherNet IP Latency for Line Topology ?

We know the following Latencies i.e Store & Forward Latency , Wireline Latency ,Queuing Latency, EIP Switch Latency. But what is cut-through Latency ? 

Appreciate your help at the earliest !

Regards,

Rajesh