Siemens Simatic S7 Series System Manual

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.

Siemens Simatic S7 Series Specifications

General

CPU	Varies by model (e.g., S7-300, S7-400, S7-1200, S7-1500)
Communication Interfaces	PROFIBUS, PROFINET, Ethernet, MPI
Programming	TIA Portal, STEP 7
Programming Languages	LAD, FBD, STL, SCL, GRAPH
I/O Modules	Digital, Analog, Specialty modules available
Operating Temperature	0°C to 60°C (standard models)
Mounting	DIN rail mounting
Operating Voltage	24V DC or 120/230V AC (varies by model)
Protection Class	IP20 (standard models)
Memory	Varies depending on the S7 model. Includes work memory (RAM) for program execution, load memory (EEPROM or Flash) for program storage, and system memory for operating system functions. Memory sizes range from kilobytes to megabytes.