Digital Input Module Sm 421; Di 16 X Uc 24/60 V (6Es7421-7Dh00-0Ab0); Features - Siemens SIMATIC S7-400 Reference Manual

Digital modules

4.10 Digital input module SM 421; DI 16 x UC 24/60 V (6ES7421-7DH00-0AB0)

4.10 Digital input module SM 421; DI 16 x UC 24/60 V
(6ES7421-7DH00-0AB0)
4.10.1

Features

Overview
SM 421; DI 16 x UC 24/60 V has the following features:
● 16 inputs, individually isolated
● Rated input voltage UC 24 V to UC 60 V
● Suitable for switches and 2-wire proximity switches (BEROs)
● Suitable as P-reading and M-reading input
● Group fault display for internal faults (INTF) and external faults (EXTF)
● Configurable diagnostics
● Configurable diagnostic interrupt
● Configurable hardware interrupts
● Configurable input delays
The status LEDs indicate the process status.
112
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08