| Parameter | Specification |
|---|---|
| Order Number | 6ES7288-1SR20-0AA1 |
| Product Series | SIMATIC S7-200 SMART |
| CPU Type | Standard CPU SR20 AC/DC/Relay |
| Power Supply | AC 85-264 V AC (47-63 Hz), 77 to 138 V DC |
| Program/Data Memory | 20 KB |
| Digital Inputs | 12 x 24 V DC (7 mA per input) |
| Digital Outputs | 8 x Relay (2 A each) |
| Communication Interfaces | 1 x PROFINET Ethernet (10/100 Mbps), 2 x RS485 (Modbus RTU, PPI protocol) |
| Expansion Capability | Up to 6 I/O modules |
| Dimensions (W x H x D) | 90 mm x 100 mm x 81 mm |
| Weight | Approx. 367 grams |
| Power Dissipation | 14 W |
| IP Protection Class | IP20 |
| Operating Temperature | 0°C to 55°C (horizontal installation) |
| Storage/Transport Temperature | -40°C to 70°C |
| Relative Humidity | Max. 95% at 25°C (non-condensing) |
| Mounting Type | DIN rail mounting (35 mm standard) |
| Certifications | CE marked |
| Installation Altitude | -1,000 m to +2,000 m above sea level |
| Atmospheric Pressure (Operation) | 660 hPa to 1080 hPa |
| Atmospheric Pressure (Storage/Transport) | 660 hPa to 1080 hPa |
| Free Fall Resistance | Max. 0.3 m, five times in product package |