Module Overview; Digital Input Modules: Characteristics At A Glance - Siemens SIMATIC S7-300 Reference Manual

Digital Modules
3.1

Module Overview

Introduction
The following tables summarize the most important characteristics of the digital
modules. This overview is intended to make it easy to choose the suitable module
for your task.
Table 3-1

Digital Input Modules: Characteristics at a Glance

SM 321;
Module DI 32 x
24 VDC
Char-
acter-
istics
(-1BL00-)
Number of inputs 32 DI;
isolated in
groups of 16
Rated input 24 VDC
voltage
Suitable for... Switches;
two, three, and four-wire proximity switches (BEROs)
Supports No
clocked operation
Programmable No
diagnostics
Diagnostic No
interrupt
Hardware interrupt No
upon edge change
Settable No
input delays
Special Features –
3-4
SM 321; SM 321;
DI 32 x DI 16 x
120 VAC 24 VDC
(-1EL00-) (-1BH02-)
32 DI; 16 DI;
isolated in isolated in
groups of 8 groups of 16
120 VAC 24 VDC
No No
No No
No No
No No
No No
– –
SM 321; SM 321;
DI 16 x DI 16 x
24 VDC High 24 VDC with
Speed hardware and
diagnostic
interrupts
(-7BH01-)
(-1BH10-)
16 DI; isolated 16 DI; isolated in
in groups of 16 groups of 16
24 VDC 24 VDC
Yes Yes
No Yes
No Yes
No Yes
No Yes
- 2
short-circuit-pro
of sensor
supplies for 8
channels each
External
redundant power
supply possible
to supply
sensors
Programmable Logic Controllers S7-300 Module Data
SM 321;
DI 16 x
24 VDC;
source input
(-1BH50-)
16 DI,
source input,
isolated in
groups of 16
24 VDC
No
No
No
No
No
–
A5E00105505-03