SIEMENS PLC S7-200 SR20 Smart CPU 6ES7288-1SR20-0AA1
Technical Specifications
| Specification |
Details |
Supplementary Details |
| Dimensions (W x H x D, mm) |
90 x 100 x 81 |
|
| Weight |
367.3 g |
320 g |
| Power Consumption |
14 W |
12 W |
| Available Current (24 V DC) |
Maximum 300 mA (Sensor Power Supply) |
|
| Digital Input Current Consumption (24 V DC) |
4 mA per used input point |
|
CPU Features
| User Memory |
12 KB Program Memory / 8 KB Data Memory / Max 10 KB Retentive Memory |
|
| Board Digital I/O |
12 Input Points / 8 Output Points |
|
| Process Image Size |
256 Input (I) / 256 Output (Q) |
|
| Analog Image |
56 Words of Input (AI) / 56 Words of Output (AQ) |
|
| Bit Memory (M) |
256 Bits |
|
| Temporary (Local) Memory |
64 Bytes in Main Program, 64 Bytes in Each Subroutine and Interrupt Program |
|
Expansion Capabilities
| I/O Module Expansion |
Up to 6 Expansion Modules |
|
| Signal Board Expansion |
Up to 1 Signal Board |
|
High-Speed Processing
- High-Speed Counter: Total 6 units:
- Single-phase: 4 x 200 KHz + 2 x 30 KHz
- Quadrature: 2 x 100 KHz + 2 x 20 KHz
- Pulse Output: 2 x 100 KHz
- Pulse Capture Input: 12
Interrupt Capabilities
| Cycle Interrupt |
2 units, 1 ms resolution |
|
| Edge Interrupt |
4 Rising Edges and 4 Falling Edges (6 each when using optional signal boards) |
|
Memory & Clock
| Memory Card |
Micro SDHC Card (Optional) |
|
| Real-Time Clock Accuracy |
±120 Seconds per Month |
|
| Real-Time Clock Retention Time |
Typically 7 Days, Minimum 6 Days at 25 °C (Maintenance-Free Supercapacitor) |
|
Performance Metrics
| Boolean Operations |
0.15 μs per instruction |
|
| Word Move |
1.2 μs per instruction |
|
| Real Mathematical Operations |
3.6 μs per instruction |
|
Program Organization
- POU (Program Organization Unit):
- Main Program: 1
- Subroutines: 128 (0 to 127)
- Interrupt Programs: 128 (0 to 127)
- Nesting Depth:
- From Main Program: 8 Subroutine Levels
- From Interrupt Program: 4 Subroutine Levels
- Accumulators: 4 units
Timers & Counters
| Timers |
- Non-Retentive (TON, TOF): 192 units
- Retentive (TONR): 64 units
|
|
| Counters |
256 units |
|