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1.4 Basic Functionality
1
(2) T series/PC link protocol transmission
The S controller can use the T series/PC link protocol to read or write register data on 
another S controller on the 10BASE5/2 LAN or to the PROSEC-T3H/T2N.
The S controller user programs for reading and writing are necessary to use the host 
functions. 
Only the basic EN311 settings performed from the T3H are required to use the slave 
functions, and no special user programs are required on the T3H.
PC link protocol transmission uses UDP/IP as the transmission protocol.
UDP/IP: User Datagram Protocol/Internet Protocol.
Figure 1-3 T Series/PC Link Protocol Transmission
PC link host station
PC link slave station
User program 
Request
Response
/10BASE2
S controller 
operating system
EN311 
User program 
S controller 
 
operating system
EN311