Addressing |
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Variable list
The CPU S7-212 supports multiple data areas. The highest access address depends on the access type and the data range and can be looked up in the Siemens documentation.
|
Description |
CPU 212 |
CPU 214 |
CPU 215 |
CPU 216 |
|---|---|---|---|---|
|
Size of user program |
512 words |
2 K words |
4 K words |
4 K words |
|
Size of user data |
512 words |
2 K words |
2.5 K words |
2.5 K words |
|
Process image of inputs |
E0.0 to E7.7 |
E0.0 to E7.7 |
E0.0 to E7.7 |
E0.0 to E7.7 |
|
Process image of outputs |
A0.0 to A7.7 |
A0.0 to A7.7 |
A0.0 to A7.7 |
A0.0 to A7.7 |
|
Analog inputs (read only) |
AEW0 to AEW30 |
AEW0 to AEW30 |
AEW0 to AEW30 |
AEW0 to AEW30 |
|
Analog outputs (write only) |
AAW0 to AAW30 |
AAW0 to AAW30 |
AAW0 to AAW30 |
AAW0 to AAW30 |
|
Variable memory
(V) |
V0.0 to V1023.7 V0.0 to V199.7 |
V0.0 to V4095.7 V0.0 to V1023.7 |
V0.0 to V5119.7 V0.0 to V5119.7 |
V0.0 to V5119.7 V0.0 to V5119.7 |
|
Marker (M) Resident area (max.) |
M0.0 to M15.7 MB0 to MB13 |
M0.0 to M31.7 MB0 to MB13 |
M0.0 to M31.7 MB0 to MB13 |
M0.0 to M31.7 MB0 to MB13 |
|
Special marker (SM) Write-protected |
SM0.0 to SM45.7 SM0.0 to SM29.7 |
SM0.0 to SM85.7 SM0.0 to SM29.7 |
SM0.0 to SM194.7 SM0.0 to SM29.7 |
SM0.0 to SM194.7 SM0.0 to SM29.7 |
The table is just an example. Please look up the exact areas in the documentation of the PLC.