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Siemens S7-400 ユーザーズマニュアル

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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