Digital Input Module Sm 421; Di 32 X Dc 24 V (6Es7421-1Bl01-0Aa0) - Siemens SIMATIC S7-400 Reference Manual

Automation system module data
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4.7

Digital input module SM 421; DI 32 x DC 24 V (6ES7421-1BL01-0AA0)

Properties
Key properties of the SM 421; DI 32 x 24 V DC:
● 32 inputs, isolated in a group of 32
● Rated input voltage 24 V DC
● Suitable for switches and 2-/3-/4-wire proximity switches (BEROs, IEC 61131; type 1)
The status LEDs indicate the process status.
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08
4.7 Digital input module SM 421; DI 32 x DC 24 V (6ES7421-1BL01-0AA0)
Digital modules
97

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