SIMATIC S7-200 SMART | 60-channel DC/DC/DC CPU
Siemens 6ES7288-1ST60-0AA0 SIMATIC S7-200 SMART CPU ST60
A compact ST60 controller with 36 digital inputs, 24 transistor outputs and integrated Ethernet and RS485 interfaces.
BrandSiemens
Model6ES7288-1ST60-0AA0
Product TypeCompact PLC CPU
01
Key Information
6ES7288-1ST60-0AA0 is the CPU ST60 DC/DC/DC article in the SIMATIC S7-200 SMART range. Its integrated I/O consists of 36 digital inputs and 24 transistor outputs, providing 60 onboard channels without a separate local I/O rack.
The CPU combines 50 KB of program and data memory with Ethernet/PROFINET and RS485 communication. It is engineered with STEP 7 Micro/WIN SMART.
02
Functions
- Executes sequential and closed-loop machine control using 30 KB program memory and 20 KB user-data memory.
- Interfaces directly with 36 sensors and 24 DC loads through the onboard channel set.
- Supports PROFINET controller operation and I-Device functions at the documented firmware levels.
- Provides six high-speed counter inputs and three pulse outputs for supported positioning and counting tasks.
- Runs up to eight PID loops and supports an optional microSDHC card for maintenance workflows.
03
Specifications
| Manufacturer | Siemens |
|---|---|
| Article Number | 6ES7288-1ST60-0AA0 |
| Controller Family | SIMATIC S7-200 SMART |
| CPU Variant | ST60, DC/DC/DC |
| Rated Supply | 24 V DC |
| Permitted Supply Range | 20.4–28.8 V DC |
| Onboard Digital Inputs | 36 × 24 V DC |
| Onboard Digital Outputs | 24 × 24 V DC transistor |
| Program / Data Memory | 30 KB / 20 KB |
| Communication | 1 Ethernet/PROFINET and 1 RS485 |
| PROFINET Capacity | Up to 8 IO devices |
| High-Speed Resources | 6 counter inputs and 3 pulse outputs up to 100 kHz |
| PID Capacity | Up to 8 loops |
| Maximum Input Current | 710 mA |
| Maximum Power Loss | 20 W |
| Execution Time | 150 ns bit; 1.2 µs word; 3.6 µs floating point |
| Protection | IP20 |
| Lifecycle | Spare-part article |
04
Installation
- Reserve the 175 mm module width and mount the CPU with ventilation appropriate to its 20 W maximum power loss.
- Apply the AA0 temperature limits for the selected mounting direction: up to 55 °C horizontally or 45 °C vertically.
- Terminate transistor-output loads with the correct 24 V DC grouping and protective measures.
- Document the Ethernet/PROFINET addresses, RS485 settings, expansion layout and high-speed I/O allocation before replacement.
- Back up the Micro/WIN SMART project and verify its CPU revision before download.
05
Lifecycle
- The AA0 revision is maintained as a spare-part article.
- Do not substitute the later AA1 revision without checking temperature ratings, approvals and project compatibility.
- Preserve the complete 6ES7288-1ST60-0AA0 number in cabinet drawings and purchasing records.
- A controlled exchange should include program backup, I/O labeling and a recorded network configuration.
