Siemens 6ES7521-1BL00-0AA0 - Wiring; Wiring and Block Diagram

Digital input module DI 32x24VDC BA (6ES7521-1BL10-0AA0)
Manual, 12/2016, A5E32363711-AD
13
Wiring
3
3.1
Wiring and block diagram
This section contains the block diagram of the module and outlines various wiring options.
You can find information on wiring the front connector, creating a cable shield, etc. in the
Wiring section of the S7-1500/ET 200MP
(http://support.automation.siemens.com/WW/view/en/59191792
) system manual.
Wiring and block diagram
The figure below shows you how to wire the module and the assignment of the channels to
the addresses (input byte a to input byte d).
①
Backplane bus interface
CHx
Channel or channel status LED (green)
M
Ground
RUN
Status display LED (green)
ERROR
Error display LED (red)
Figure 3-1 Block diagram and terminal assignment