Siemens SIMATIC S7 - Page 19

Product overview
1.1 S7-200 SMART CPU
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
19
Table 1- 1 S7-200 SMART CPUs
SR20
ST20
CR20s
SR30
ST30
CR30s
SR40
ST40
CR40s
SR60
ST60
CR60s
Compact serial, non-
expandable
X X X X
Standard, expandable X X X X X X X X
Relay output
X
X
X
X
X
X
X
X
Transistor output (DC) X X X X
I/O points (built-in)
20
20
20
30
30
30
40
40
40
60
60
60
Table 1- 2 Compact serial, non-expandable CPUs
Features
CPU CR20s
CPU CR30s
CPU CR40s
CPU CR60s
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
12 Kbytes
12 Kbytes
12 Kbytes
User data
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
Retentive
2 Kbytes max.
1
2 Kbytes max.
1
2 Kbytes max.
1
2 Kbytes max.
1
On-board digi-
tal I/O
• Inputs
• Outputs
• 12 DI
• 8 DQ Relay
• 18 DI
• 12 DQ Relay
• 24 DI
• 16 DQ Relay
36 DI
24 DQ Relay
Expansion modules
None
None
None
None
Signal board
None
None
None
None
High-speed
counters (4
total)
Single
phase
4 at 100 kHz 4 at 100 kHz 4 at 100 kHz 4 at 100 kHz
A/B phase
2 at 50 kHz
2 at 50 kHz
2 at 50 kHz
2 at 50 kHz
PID loops
8
8
8
8
Real-time clock with 7-day
back-up
No No 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.