Siemens SIMATIC S7-200, Системное руководство, Страница: 20 / 866

Product overview
1.1 S7-200 SMART CPU
S7-200 SMART
20
System Manual, V2.3, 07/2017, A5E03822230-AF
Table 1- 3 Standard expandable CPUs
Features CPU SR20,
CPU ST20 CPU SR30,
CPU ST30 CPU SR40,
CPU ST40 CPU SR60,
CPU ST60
Dimensions: W x H x D (mm) 90 x 100 x 81 110 x 100 x 81 125 x 100 x 81 175 x 100 x 81
User memory Program 12 Kbytes 18 Kbytes 24 Kbytes 30 Kbytes
User data 8 Kbytes 12 Kbytes 16 Kbytes 20 Kbytes
Retentive 10 Kbytes max.
1
10 Kbytes max.
1
10 Kbytes max.
1
10 Kbytes max.
1
On-board digital
I/O
•
Inputs
•
Outputs
•
12 DI
•
8 DQ
•
18 DI
•
12 DQ
•
24 DI
•
16 DQ
•
36 DI
•
24 DQ
Expansion modules 6 max. 6 max. 6 max. 6 max.
Signal board 1 1 1 1
High-speed
counters (6
total)
Single phase 4 at 200 kHz
2 at 30 kHz
5 at 200 kHz
1 at 30 kHz
4 at 200 kHz
2 at 30 kHz
4 at 200 kHz
2 at 30 kHz
A/B phase 2 at 100 kHz
2 at 20 kHz
3 at 100 kHz
1 at 20 kHz
2 at 100 kHz
2 at 20 kHz
2 at 100 kHz
2 at 20 kHz
Pulse outputs 2 2 at 100 kHz 3 at 100 kHz 3 at 100 kHz 3 at 100 kHz
PID loops 8 8 8 8
Real-time clock with 7-day back-up Yes Yes Yes Yes
1
You can configure areas of V memory, M memory, C memory (current values), and portions of T memory (current val-
ues on retentive timers) to be retentive, up to the specified maximum amount.
2
The specified maximum pulse frequency is possible only for CPU models with transistor outputs. Pulse output operation
is not recommended for CPU models with relay outputs.
Refer to the technical specifications (Page 679) for the power requirements of the CPU and
the expansion modules. Use the worksheets in Appendix B, Calculating a power budget
(Page 790) to calculate your power budget.