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The 6ES7512-1CK01-0AB0 is the Siemens SIMATIC S7-1500 Compact CPU 1512C-1 PN, a controller that combines an S7-1500 CPU, onboard digital and analog I/O, and high-speed technology functions in a single compact unit. It is sized for OEM machines and standalone equipment that need full S7-1500 programming capability without the cost and footprint of a full rack with separate I/O modules. Typical buyers include builders of small packaging machines, lab and analytical equipment, test stands, and HVAC controllers. The 1512C-1 PN is an active product and the larger sibling of the 1511C-1 PN. This page lists the technical data, compares the Compact CPU options, and shows how to source it through Rabwellplc.
Technical Specifications
| Parameter | Value |
|---|---|
| Article number (MLFB) | 6ES7512-1CK01-0AB0 |
| CPU type | SIMATIC S7-1500 Compact CPU 1512C-1 PN |
| Work memory for program | 250 KB |
| Work memory for data | 1 MB |
| Bit instruction time | 48 ns |
| Onboard digital inputs | 32 DI 24 V DC |
| Onboard digital outputs | 32 DQ 24 V DC, 0.5 A |
| Onboard analog inputs | 5 AI (voltage / current / RTD / thermocouple) |
| Onboard analog outputs | 2 AQ (voltage / current) |
| Technology functions | 6 high-speed counters, frequency measurement, PWM, position input |
| PROFINET interfaces | 1 (X1, 2-port switch) |
| Display | Integrated front display |
| Memory card | SIMATIC Memory Card required |
| Supply voltage | 24 V DC |
| Ambient temperature (operation) | 0 to 60 degC horizontal mounting |
| Programming software | TIA Portal STEP 7 Professional V14 SP1 or higher |
Same-Series Comparison: S7-1500 Compact CPUs
| CPU | Article No. | Code / Data Memory | Bit Instruction Time | Onboard I/O | Use Case |
|---|---|---|---|---|---|
| CPU 1511C-1 PN | 6ES7511-1CK01-0AB0 | 175 KB / 1 MB | 60 ns | 16 DI / 16 DQ / 5 AI / 2 AQ | Entry-level compact |
| CPU 1512C-1 PN | 6ES7512-1CK01-0AB0 | 250 KB / 1 MB | 48 ns | 32 DI / 32 DQ / 5 AI / 2 AQ | Mid-range compact |
| CPU 1513-1 PN (modular) | 6ES7513-1AL02-0AB0 | 450 KB / 1.5 MB | 40 ns | None (modular rack) | When external I/O is preferred |
If your application can grow beyond what the 1512C onboard I/O provides, the modular 1513-1 PN with external I/O is often the next step.
Compatible Components
- Expansion I/O: full 6ES7521/522/531/532 catalog can be added to the rack alongside the Compact CPU
- Distributed I/O: ET 200SP stations over PROFINET for remote I/O
- Communication modules: CM 1542-5 (PROFIBUS DP), CP 1543-1 (Ethernet)
- HMI: SIMATIC HMI Comfort, Unified Comfort, KTP Basic and Mobile panels
- Power supply: PM 1507 24 V DC load supply
- Memory card: SIMATIC Memory Card 4 MB or larger
The Siemens PLC systems collection carries matching expansion modules and ET 200SP components.
Common Use Cases
- Compact OEM machines such as small packaging, labeling, and inspection equipment
- Lab and analytical instruments that need a full S7-1500 toolchain in a tight panel
- Test stands and end-of-line testers with onboard high-speed counting and PWM
- HVAC and small process skids with mixed digital, analog, and temperature I/O
- Replacement of S7-300 compact CPUs (CPU 313C, 314C) in modernization projects
Why Buy from Rabwellplc
Rabwellplc maintains US stock of Siemens Compact CPUs including 6ES7512-1CK01-0AB0, with same-day shipping on in-stock units, factory-sealed packaging, and a 12-month warranty. Engineers can request the latest datasheet and firmware compatibility notes through the product page, and our team supports Net 30 for verified buyers.
Check Stock and Lead Time for 6ES7512-1CK01-0AB0
Frequently Asked Questions
Is the 6ES7512-1CK01-0AB0 in stock at Rabwellplc?
Live stock is shown on the product page. For larger orders or critical timelines, contact our team for a same-day quote.
What warranty do you provide?
We offer a 12-month warranty against manufacturing defects on factory-new, sealed Siemens Compact CPUs.
What is the lead time if the unit is not in stock?
Backordered units typically ship from our supply network in 1 to 3 weeks. Expedited options are available on request.
Can the 1512C replace an older S7-300 CPU 314C?
The 1512C is a typical modernization target for S7-300 compact CPUs such as 313C and 314C. Programs need to be migrated through the TIA Portal migration tool, and onboard I/O addressing must be re-engineered, but the platform fit is good.
Do you provide the official Siemens datasheet?
Yes. Request the latest equipment manual through the product page and our team will email the official Siemens PDF.