Connection examples for redundant I/Os   
C.28 SM 422; DO 32 x DC 24 V/0.5 A, 6ES7 422–7BL00–0AB0 
  CPU 410-5H Process Automation/CPU 410 SMART 
334  System Manual, 10/2013, A5E32631667-AA 
 
SM 422; DO 32 x DC 24 V/0.5 A, 6ES7 422–7BL00–0AB0 
The diagram below shows the connection of an actuator to two SM 422; DO 32 x 24 V/0.5 A. 
The actuator is connected to channel 0. Suitable diodes are, for example, those of the series 
1N4003 ... 1N4007, or any other diode with U
_r 
>=200 V and I_
F 
>= 1 A 
 
Figure C-26  Example of an interconnection with SM 422; DO 32 x DC 24 V/0.5 A