Siemens Simatic S7 Series

Product overview
1.1 S7-200 SMART CPU
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
19
Table 1- 2 Compact non-expandable CPUs
Features
CPU CR40
CPU CR60
Dimensions: W x H x D (mm)
125 x 100 x 81
175 x 100 x 81
User memory Program 12 Kbytes 12 Kbytes
User data
8 Kbytes
8 Kbytes
Retentive 10 Kbytes max.
1
10 Kbytes max.
1
On-board digital I/O
• Inputs
• Outputs
• 24 DI
• 16 DQ Relay
36 DI
24 DQ Relay
Expansion modules
None
None
Signal board
None
None
High-speed counters 4 at 100 K Hz single phase
or
2 at 50 K Hz A/B phase
4 at 100 K Hz single phase
or
2 at 50 K Hz A/B phase
PID loops
8
8
Real-time clock with 7-day back-up
No
No
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.
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 4 at 200 K Hz
single phase
or
2 at 100 K Hz A/B
phase
4 at 200 K Hz sin-
gle phase
or
2 at 100 K Hz A/B
phase
4 at 200 K Hz sin-
gle phase
or
2 at 100 K Hz A/B
phase
4 at 200 K Hz sin-
gle phase
or
2 at 100 K Hz A/B
phase
Pulse outputs
2
2 at 100 KHz
3 at 100 K Hz
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.