References
E.5 Memory ranges and features
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
841
E.5
Memory ranges and features
The following table provides the memory ranges and features for V2.3 CPUs. For CPUs of
firmware versions prior to V2.3, refer to the
S7-200 SMART System Manual
for your specific
CPU model and version.
Description
CPU CR20s,
CPU CR30s,
CPU CR40s,
CPU CR60s
CPU SR20,
CPU ST20
CPU SR30,
CPU ST30
CPU SR40,
CPU ST40
CPU SR60,
CPU ST60
User program size
12 KB
12 KB
18 KB
24 KB
30 KB
User data size
8 KB
8 KB
12 KB
16 KB
20 KB
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
VB8191
VB0 to
VB12287
VB0 to VB16383 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 M0.0 to M31.7 M0 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 HC5
HC0 to HC5
HC0 to HC5
HC0 to HC5