Siemens SIMATIC Manual page 50

Digital modules
3.1 Module overview
Table 3- 2 Digital input modules (continued)
SM 321;
DI 16 x DC24V
Properties
High Speed
(-1BH10-)
Number of inputs 16 DI; electrical-
ly isolated in
groups of 16
Rated input voltage 24 VDC
Suitable for... Switches;
2-wire, 3-wire and 4-wire proximity switches (BEROs)
Supports isochro- Yes
nous mode
Programmable No
diagnostics
Diagnostic interrupt No
Edge-triggered No
hardware interrupt
Adjustable input No
delays
Special features Fast module;
especially for
isochronous
mode
50
SM 321; SM 321; DI 16 x
DI 16 x DC24V DC 24V/125V
with process and with process and
diagnostic inter- diagnostic inter-
rupts rupts
(-7BH01-) (-7EH00-)
16 DI; electrically 16 DI; isolated in
isolated in groups groups of 16
of 16
24 VDC 24 VDC - 125
VDC
Yes No
Yes Yes
Yes Yes
Yes Yes
Yes Yes
2 short-circuit- ---
proof sensor sup-
plies for 8 chan-
nels each;
External redun-
dant sensor sup-
ply is supported
Module
SM 321;
DI 16 x DC24V;
source input
(-1BH50-)
16 DI,
source input, electri-
cally isolated in
groups of 16
24 VDC
No
No
No
No
No
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Manual, 06/2017, A5E00105505-AJ
SM 321;
DI 16 x UC24/48V
(-1CH00-)
16 DI; isolated in
groups of 1
24 VDC to 48 VDC
24 VAC to 48 VAC
No
No
No
No
No
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S7-300 Module data