Siemens SIMATIC - Page 51

Digital modules
3.1 Module overview
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
51
Table 3- 3 Digital input modules (continued)
Properties
Module
SM 321;
DI 16 x DC48-125V
SM 321;
DI 16 x AC120/230
V
SM 321;
DI 16 x NAMUR
SM 321; DI 8 x
AC 120/230V
SM 321; DI 8 x AC
120/230 V ISOL
(-1CH20-)
(-1FH00-)
(-7TH00-) *
(-1FF01-)
(-1FF10-)
Number of inputs 16 DI; isolated in
groups of 4
16 DI; isolated in
groups of 4
16 DI; isolated in
groups of 2
8 DI; isolated in
groups of 2
8 DI; isolated in
groups of 2
Rated input voltage 120/230 VAC 120/230 VAC 24 VDC 120/230 VAC 120/230 VAC
Suitable for... Switches;
2-wire, 3-wire and
4-wire proximity
switches (BEROs)
Switches; 2-wire /
3-wire AC proximi-
ty switches
NAMUR encoder Switches; 2-wire / 3-wire AC proximity
switches
Supports isochro-
nous mode
No No No No No
Programmable
diagnostics
No No No No No
Diagnostic interrupt
No
No
Yes
No
No
Edge-triggered
hardware interrupt
No No No No No
Adjustable input
delays
No No No No No
Special features --- --- Module with single
channel diagnos-
tics and extensive
control functions
--- ---
* This module is described in the ET 200M Signal Modules for Process Automation manual.
You can find the manual on the Internet
(http://support.automation.siemens.com/WW/view/en/7215812
).