Module Overview; Table 3-1 Digital Input Modules - Siemens SIMATIC S7-300 Manual

Digital modules

3.1 Module overview

3.1 Module overview
3.1
Introduction
The tables below summarize the essential properties of the digital modules. This overview
supports you in selecting a module to suit your requirements.
Overview of properties
The table below shows essential properties of the digital input modules
Table 3-1 Digital input modules:
Module
SM 321;
DI 32 x
Properties
DC 24 V
(-1BL00-)
Number of inputs 32 DI;
electrically
isolated in
groups of 16
Rated input voltage 24 VDC
Suitable for... Switches;
2-wire, 3-wire and 4-wire proximity switches (BEROs)
Isochronous mode No
supported
Programmable No
diagnostics function
Diagnostic interrupt No
Edge-triggered No
hardware interrupt
Adjustable input No
delay times
Special features -
3-2
SM 321; SM 321;
DI 32 x DI 16 x
AC 120 V DC 24 V
(-1EL00-) (-1BH02-)
32 DI; 16 DI;
electrically electrically
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 DC 24 V DI 16 x
High Speed DC 24 V with
process and
diagnostic
interrupt
(-1BH10-)
(-7BH01-)
16 DI; 16 DI; electrically
electrically isolated in groups
isolated in of 16
groups of 16
24 VDC 24 VDC
Yes Yes
No Yes
No Yes
No Yes
No Yes
- 2 short circuit-
proof encoder
supplies per 8
channels;
external
redundant supply
of encoders is
supported
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
SM 321;
DI 16 x
DC 24 V;
source input
(-1BH50-)
16 DI,
source input,
electrically
isolated in
groups of 16
24 VDC
No
No
No
No
No
-