Wiring and block diagrams
The figure below shows you how to connect the module and channel addressing (input byte
a to input byte b).
①
Figure 3-1
DI 16x230VAC BA Digital Input Module (6ES7521-1FH00-0AA0)
Manual, 07/2014, A5E03485975-AC
Backplane bus interface
Block diagram and terminal assignment
Wiring
11