Connection examples for redundant I/Os 
  C.34 SM331; AI 8 x 0/4...20mA HART, 6ES7 331-7TF01-0AB0 
CPU 410-5H Process Automation/CPU 410 SMART 
System Manual, 10/2013, A5E32631667-AA 
341 
The diagram below shows the connection of a 2-wire transmitter to two redundant SM 331; 
AI 8 x 0/4...20mA HART. 
 
Figure C-33  Interconnection example 2 SM 331; AI 8 x 0/4...20mA HART