Siemens Simatic S7 Series System Manual

References
E.5 Memory ranges and features
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
703
E.5
Memory ranges and features
Description
CPU SR20,
CPU ST20
CPU SR30,
CPU ST30
CPU SR40,
CPU ST40
CPU CR40,
CPU CR60
CPU SR60,
CPU ST60
User program size
12 Kbytes
18 Kbytes
24 Kbytes
12 Kbytes
30 Kbytes
User data size 8 Kbytes 12 Kbytes 16 Kbytes 8 Kbytes 20 Kbytes
Process image input register
I0.0 to I31.7
I0.0 to I31.7
I0.0 to I31.7
I0.0 to I31.7
I0.0 to I31.7
Process image output register
Q0.0 to Q31.7
Q0.0 to Q31.7
Q0.0 to Q31.7
Q0.0 to Q31.7
Q0.0 to Q31.7
Analog inputs (read only) AIW0 to AIW110 AIQ0 to AIW110 AIW0 to
AIW110
-- AIW0 to
AIW110
Analog outputs (write only) AQW0 to
AQW110
AQW0 to
AQW110
AQW0 to
AQW110
--- AQW0 to
AQW110
Variable memory (V) VB0 to VB8191 VB0 to VB12287 VB0 to
VB16383
VB0 to VB8191 VB0 to
VB20479
Local memory (L)
1
LB0 to LB63
LB0 to LB63
LB0 to LB63
LB0 to LB63
LB0 to LB63
Bit memory (M)
M0.0 to M31.7
M0 to M31.7
M0.0 to M31.7
M0.0 to M31.7
M0.0 to M31.7
Special Memory
(SM)
Total SM0.0 to
SM2047.7
SM0.0 to
SM2047.7
SM0.0 to
SM2047.7
SM0.0 to
SM2047.7
SM0.0 to
SM2047.7
Read
only
SM0.0 to
SM29.7
SMB480.0 to
SM515.7
SM1000.0 to
SM1699.7
SM0.0 to
SM29.7
SMB480.0 to
SM515.7
SM1000.0 to
SM1699.7
SM0.0 to
SM29.7
SMB480.0 to
SM515.7
SM1000.0 to
SM1699.7
SM0.0 to
SM29.7
SMB480.0 to
SM515.7
SM1000.0 to
SM1699.7
SM0.0 to
SM29.7
SMB480.0 to
SM515.7
SM1000.0 to
SM1699.7
Timers 256 (T0 to T255) 256 (T0 to T255) 256 (T0 to
T255)
256 (T0 to
T255)
256 (T0 to
T255)
Retentive on-delay
1 ms T0, T64 T0, T64 T0, T64 T0, T64 T0, T64
10 ms T1 to T4, and
T65 to T68
T1 to T4, and
T65 to T68
T1 to T4, and
T65 to T68
T1 to T4, and
T65 to T68
T1 to T4, and
T65 to T68
100 ms T5 to T31, and
T69 to T95
T5 to T31, and
T69 to T95
T5 to T31, and
T69 to T95
T5 to T31, and
T69 to T95
T5 to T31, and
T69 to T95
On/Off delay
1 ms
T32, T96
T32, T96
T32, T96
T32, T96
T32, T96
10 ms T33 to T36, and
T97 to T100
T33 to T36, and
T97 to T100
T33 to T36, and
T97 to T100
T33 to T36, and
T97 to T100
T33 to T36, and
T97 to T100
100 ms T37 to T63, and
T101 to T255
T37 to T63, and
T101 to T255
T37 to T63, and
T101 to T255
T37 to T63, and
T101 to T255
T37 to T63, and
T101 to T255
Counters 256 (C0 to
C255)
256 (C0 to
C255)
256 (C0 to
C255)
256 (C0 to
C255)
256 (C0 to
C255)
High-speed counters
HC0 to HC3
HC0 to HC3
HC0 to HC3
HC0 to HC3
HC0 to HC3
Sequential control relays (S)
S0.0 to S31.7
S0.0 to S31.7
S0.0 to S31.7
S0.0 to S31.7
S0.0 to S31.7
Accumulator registers
AC0 to AC3
AC0 to AC3
AC0 to AC3
AC0 to AC3
AC0 to AC3
Jumps/Labels
0 to 255
0 to 255
0 to 255
0 to 255
0 to 255
Call/Subroutine
0 to 127
0 to 127
0 to 127
0 to 127
0 to 127
Interrupt routines
0 to 127
0 to 127
0 to 127
0 to 127
0 to 127
Positive/negative transitions
1024
1024
1024
1024
1024

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.