Siemens Simatic S7-400 - Manual (Page 125)

Digital Modules
4-3
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
4.1 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 4-1 Digital Input Modules: Characteristics at a Glance
Module
Characteristics
SM 421;
DI 32 24
VDC
(-1BL0x-)
SM 421;
DI 16 24
VDC
(-7BH00-)
SM 421;
DI 16 120
VAC
(-5EH00-)
SM 421;
DI 16 24/
60 VUC
(-7DH00-)
SM 421;
DI 16 120
/230 VUC
(-1FH00-)
SM 421;
DI 16 120
/230 VUC
(-1FH20-)
SM 421;
DI 32 120
VUC
(-1EL00-)
Number of
inputs 32 DI;
isolated in
groups of
32 16 DI;
isolated in
groups of 8 16 DI;
isolated in
groups of 1 16 DI;
isolated in
groups of 1 16 DI;
isolated in
groups of 4 16 DI;
isolated in
groups of 4 32 DI;
isolated in
groups of 8
Rated input
voltage 24 VDC 24 VDC 120 VAC 24 VUC to
60 VUC 120 VAC/
230 VDC 120/230
VUC 120 VAC/
VDC
Suitable for... Switches
Two-wire proximity switches (BEROs)
Programmable
diagnostics No Yes No Yes No No No
Diagnostic
Interrupt No Yes No Yes No No No
Hardware
interrupt upon
edge change No Yes No Yes No No No
Adjustable input
delays No Yes No Yes No No No
Substitute value
output – Yes – – – – –
Special Features High
packaging
density Quick and
with
interrupt
capability Channel-
specific
isolation Interrupt
capability
with low,
variable
voltages For high,
variable
voltages For high,
variable
voltages
Input
characterist
ic curve to
IEC
61131-2
High
packaging
density