Siemens SIMATIC S7 - Digital Inputs and Outputs

Technical specifications
A.2 S7-200 SMART CPUs
S7-200 SMART
708 System Manual, V2.3, 07/2017, A5E03822230-AF
A.2.3.2
Digital inputs and outputs
Table A- 45 Digital inputs
Technical data
CPU ST40 DC/DC/DC
CPU SR40 AC/DC/Relay
CPU CR40s AC/DC/Relay
Number of inputs
24
24
24
Type
Sink/Source (IEC Type 1 sink,
except I0.0 to I0.3)
Sink/Source (IEC Type 1
sink)
Sink/Source (IEC Type 1
sink)
Rated voltage
24 V DC at 4 mA, nominal
24 V DC at 4 mA, nominal
24 V DC at 4 mA, nominal
Continuous permissible
voltage
30 V DC, max. 30 V DC, max. 30 V DC, max.
Surge voltage
35 V DC for 0.5 sec.
35 V DC for 0.5 sec.
35 V DC for 0.5 sec.
Logic 1 signal (min.) I0.0 to I0.3: 4 V DC at 8 mA
Other inputs: 15 V DC at 2.5
mA
15 V DC at 2.5 mA 15 V DC at 2.5 mA
Logic 0 signal (max.) I0.0 to I0.3: 1 V DC at 1 mA
Other inputs: 5 V DC at 1 mA
5 V DC at 1 mA 5 V DC at 1 mA
Isolation (field side to
logic)
500 V AC for 1 minute 500 V AC for 1 minute 500 V AC for 1 minute
Isolation group
1
1
1
Filter times Individually selectable on
each channel (points I0.0 to
I1.5):
μs: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4,
12.8
ms: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4,
12.8
Individually selectable on
each channel (points I0.0 to
I1.5):
μs: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4,
12.8
ms: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4,
12.8
Individually selectable on
each channel (points I0.0 to
I1.5):
μs: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4,
12.8
ms: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4,
12.8
Individually selectable on
each channel (points I1.6 and
greater):
ms: 0, 6.4, 12.8
Individually selectable on
each channel (points I1.6 and
greater):
ms: 0, 6.4, 12.8
Individually selectable on
each channel (points I1.6 and
greater):
ms: 0, 6.4, 12.8
HSC clock input rates
(max.)
(Logic 1 Level = 15 to 26
V DC)
Single phase: 4 HSCs at 200
kHz;
2 HSCs at 30 kHz
A/B phase: 2 HSCs at 100
kHz;
2 HSCs at 20 kHz
Single phase: 4 HSCs at 200
kHz;
2 HSCs at 30 kHz
A/B phase: 2 HSCs at 100
kHz;
2 HSCs at 20 kHz
Single phase: 4 HSCs at 100
kHz
A/B phase: 2 HSCs at 50 kHz