Combines thirty onboard digital points in the ST30 standard CPU.
Technical Summary
6ES7288-1ST30-0AA1 is the Siemens SIMATIC S7-200 SMART CPU ST30. It uses a 20.4 to 28.8 V DC supply and provides 18 onboard 24 V DC inputs plus 12 onboard 24 V DC transistor outputs.
The CPU provides 30 KB of program and data memory. Six inputs support the documented high-speed-counter function, while Ethernet and RS485 interfaces support controller communications.
This 0AA1 CPU belongs to the V2.7 generation and cannot be downgraded to V2.6 or earlier.
Specifications
| Manufacturer | Siemens |
|---|---|
| Exact article number | 6ES7288-1ST30-0AA1 |
| Product family | SIMATIC S7-200 SMART |
| CPU designation | CPU ST30 |
| CPU architecture | DC/DC/DC |
| Supply voltage | 20.4 to 28.8 V DC |
| Digital inputs | 18 onboard, 24 V DC |
| Digital outputs | 12 onboard transistor outputs, 24 V DC |
| Program and data memory | 30 KB |
| High-speed-counter-capable inputs | 6 |
| Industrial Ethernet interfaces | 1 |
| RS485 interfaces | 1 |
| Mounting | DIN rail |
| Engineering software | STEP 7-Micro/WIN SMART |
| Firmware generation | 0AA1 hardware supports V2.7; no downgrade to V2.6 or earlier |
Features
Provides transistor outputs and six inputs with documented high-speed-counter capability.
Integrates Ethernet and RS485 communication for automation and serial-network applications.
Uses 30 KB of program and data memory for the controller application.
Compatibility
- Use STEP 7-Micro/WIN SMART V2.7 or later software that supports this 0AA1 hardware generation.
- Confirm 24 V DC supply, commons, output loads and pulse or high-speed input assignments.
- Review the complete expansion-module list, Ethernet addressing and RS485 configuration.
- Keep ST30 separate from ST20, ST40 and SR relay-output variants during spare selection.
Replacement
- Back up the controller project, firmware, network settings, passwords and high-speed I/O assignments.
- Isolate field and control power, label all terminals and document the expansion-module sequence.
- Load only the approved project into a compatible 0AA1 CPU and confirm every module is recognized.
- Test high-speed inputs, transistor outputs, communications and the complete safety sequence at controlled speed.
FAQ
Q01
Can 6ES7288-1ST30-0AA1 be downgraded to firmware V2.6?
No. Siemens states that the 0AA1 CPU generation cannot be downgraded to V2.6 or earlier.
Q02
What field evidence is most useful for a 6ES7288-1ST30-0AA1 enquiry?
Send the complete label, project and firmware records, terminal photographs, expansion list and high-speed I/O assignments.
Q03
Can an ST20 or ST40 replace the ST30 without project changes?
No direct equivalence should be assumed because onboard I/O count, memory and terminal assignments differ.
Q04
What should be checked if a high-speed channel no longer counts correctly?
Verify the assigned input, sensor voltage and common, wiring and shielding, filter settings, project configuration and supported CPU firmware.
Q05
How is a replacement ST30 accepted for production?
Confirm the project checksum, communications, high-speed counting, all affected I/O points and an approved machine-cycle test.
About IndustryParts
https://www.industryparts.com/ST30 supply records include the high-speed I/O assignment
IndustryParts records 6ES7288-1ST30-0AA1 with its exact 0AA1 generation, DC/DC/DC architecture and installed high-speed channels.
- Exact ST30 article checked
- High-speed channels recorded
- Project and firmware evidence requested
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