Digital Io Modules - Siemens SIMATIC Manual

Digital modules
3.1 Module overview
3.1.4

Digital IO modules

Overview of properties
The table below shows the essential properties of digital IO modules
Table 3- 8 Digital IO modules
Properties
Number of inputs
Number of outputs
Rated input voltage
Output current
Rated load voltage
Inputs suitable for...
Outputs suitable for...
Supports isochronous mode
Programmable diagnostics
Diagnostic interrupt
Edge-triggered hardware inter-
rupt
Programmable input delay
Substitution value output
Special features
56
SM 323; DI 16/DO 16 x
DC 24 V/ 0,5 A
(-1BL00-)
16 inputs, electrically isolat-
ed in groups of 16
16 outputs, electrically iso-
lated in groups of 8
24 VDC
0.5 A
24 VDC
Switches and 2-/3-/4-wire proximity switches (BEROs).
solenoid valves, DC contactors and signal lamps
no
no
no
no
no
no
-
Module
SM 323; DI 8/DO 8 x
DC 24 V/0,5 A
(-1BH01-)
8 inputs, electrically isolated
in groups of 8
8 outputs, electrically isolat-
ed in groups of 8
24 VDC
0.5 A
24 VDC
no
no
no
no
no
no
SM 327; DI 8/DX 8 x
DC 24 V/0,5 A,
Programmable
(-1BH00-)
8 digital inputs, plus 8 sepa-
rately programmable in-
puts/outputs, electrically
isolated in groups of 16
24 VDC
0.5 A
24 VDC
no
no
no
no
no
no
8 individually configurable
input or outputs;
Reading back of inputs is
possible, for example, for
diagnoses
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ