Technology PLC differences 1516T-3 PN/DP,CPU 1517T-3 PN/DP and CPU 1518T-4 PN/DP

1) Can some one confirm above statement .

2) Also send some ppt, Documents what is the advantages of "T" PLC over normal PLC 

6ES7516-3TN00-0AB0  will support Profinet inbuilt with in PLC ?

I am confused with the description "1st for IRT and 2nd interface as Ethernet". Ethernet means PROFINET here ? or only to transfer pc program.

But where as in data sheet mentioned as "A distributed I/O system is characterized not only by the integration of distributed I/O via PROFINET or PROFIBUS communication modules, but also by the connection of I/O via AS-i master modules or links (e.g. IE/PB-Link)"

Ravi_Mechatronics

6ES7516-3TN00-0AB0  will support Profinet inbuilt with in PLC ?

I am confused with the description "1st for IRT and 2nd interface as Ethernet". Ethernet means PROFINET here ? or only to transfer pc program.

But where as in data sheet mentioned as "A distributed I/O system is characterized not only by the integration of distributed I/O via PROFINET or PROFIBUS communication modules, but also by the connection of I/O via AS-i master modules or links (e.g. IE/PB-Link)"

 All of the three PLC's you have in the topic name have Profinet. All of the CPU's also have 2 network cards, one 100mbit for Profinet (2 connection ports) and one 1gbit for high data amount connections (1 connection port).