Digital Modules
3-5
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Table 3-2 Digital Input Modules: Characteristics at a glance (continued)
Module
Char-
acter-
istics
SM 321;
DI 16 x
UC 24/48V
(-1CH00-)
SM 321;
DI 16 x
48-125 VDC
(-1CH20-)
SM 321;
DI 16 x
120/230 VAC
(-1FH00-)
SM 321;
DI 8 x
120/230 VAC
(-1FF01-)
SM 321;
DI 8 x
120/230 VAC
ISOL
(-1FF10-)
Number of inputs 16 DI; isolated in
groups of 1
16 DI; isolated in
groups of 8
16 DI; isolated in
groups of 4
8 DI, isolated in
groups of 2
8 DI; isolated in
groups of 1
Rated input
voltage
24 to 48 VDC, 24
to 48 VAC
48 to 125 VDC 120/230 VAC 120/230 VAC 120/230 VAC
Suitable for... Switches;
two, three, and four-wire proximity
switches (BEROs)
Switches;
two and three-wire AC proximity switches
Supports
clocked operation
No No No No No
Programmable
diagnostics
No No No No No
Diagnostic
interrupt
No No No No No
Hardware interrupt
upon edge change
No No No No No
Settable
input delays
No No No No No
Special Features – –