Siemens 6ES7400-2JA10-0AA1 S7-400 CPU Module | Replacement, Equivalent & Selection Guide
The Siemens 6ES7400-2JA10-0AA1 is a central processing unit (CPU) module for the SIMATIC S7-400 programmable logic controller platform — Siemens’ high-performance PLC series designed for complex, large-scale industrial automation. This module serves as the core controller in S7-400 rack-based systems, handling program execution, data management, and communication coordination across the automation network.
At Konmask.com, we specialize in sourcing, verifying, and supplying genuine and compatible S7-400 components for industrial buyers who require reliable, spec-accurate parts with full traceability.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6ES7400-2JA10-0AA1 |
| Product Family | SIMATIC S7-400 |
| Module Type | CPU / Central Processing Unit |
| Manufacturer | Siemens AG |
| Series | S7-400 (CPU 400 Series) |
| Weight | 3,040 g (approx.) |
| Communication Interface | MPI / DP (model-dependent) |
| Operating Voltage | DC 24 V (via backplane bus) |
| Programming Software | STEP 7 (SIMATIC Manager / TIA Portal) |
| Mounting | S7-400 rack (UR1, UR2, CR2, ER1, ER2) |
| Country of Origin | Germany / EU |
Note: Always verify full datasheet specifications against your application requirements before ordering.
Compatible Replacement & Equivalent Models
If the 6ES7400-2JA10-0AA1 is discontinued, out of stock, or outside budget, the following models may serve as functional replacements or upgrades — subject to firmware, rack, and program compatibility verification:
| Model | Series | Notes |
|---|---|---|
| 6ES7412-1XJ05-0AB0 | S7-400 CPU 412-1 | Entry-level S7-400 CPU; verify memory & I/O capacity |
| 6ES7414-2XK05-0AB0 | S7-400 CPU 414-2 | Mid-range; expanded program memory |
| 6ES7416-2XN05-0AB0 | S7-400 CPU 416-2 | High-performance; suitable for large programs |
| 6ES7417-4HT14-0AB0 | S7-400H CPU 417 | High-availability (redundant) variant |
| 6ES7518-4AP00-0AB0 | S7-1500 CPU 1518 | Next-gen platform; requires program migration |
⚠ Important: Replacement compatibility depends on firmware version, installed I/O modules, communication configuration, and existing STEP 7 / TIA Portal project structure. Always test in a non-production environment first.
Why Choose the Original Model
- Proven field reliability — The S7-400 platform has decades of deployment in heavy industry, power generation, and process automation.
- Direct drop-in fit — No rack modification or rewiring required when replacing like-for-like.
- Program compatibility — Existing STEP 7 projects load without migration effort.
- Siemens ecosystem integration — Native compatibility with PROFIBUS DP, MPI, and S7 communication protocols.
- Long service life — Siemens S7-400 components are supported with spare parts and firmware updates for extended periods.
Typical Applications
- Continuous process control (chemical, petrochemical, oil & gas)
- Power plant automation and energy management systems
- Automotive body-in-white and powertrain assembly lines
- Water and wastewater treatment plant control
- Steel mill and rolling mill process control
- Large-scale building automation and HVAC systems
- Railway signaling and infrastructure control
System Compatibility
The 6ES7400-2JA10-0AA1 is designed for use within the SIMATIC S7-400 rack system. Confirm compatibility with the following before ordering:
- Rack type: UR1, UR2, CR2, ER1, ER2 (S7-400 standard racks)
- Power supply: S7-400 PS module (e.g., 6ES7407-0DA02-0AA0)
- I/O modules: S7-400 SM series signal modules
- Communication modules: S7-400 CP series (PROFIBUS, Industrial Ethernet)
- Programming environment: SIMATIC STEP 7 v5.x or TIA Portal (with S7-400 support package)
- HMI: SIMATIC HMI panels via MPI or PROFIBUS DP
Selection Guide
Use the following criteria to select the correct S7-400 CPU for your application:
| Requirement | Recommended Model Range |
|---|---|
| Small program (<64 KB), basic I/O | CPU 412 series (6ES7412-x) |
| Medium complexity, PROFIBUS DP master | CPU 414 series (6ES7414-x) |
| Large program, high-speed processing | CPU 416 series (6ES7416-x) |
| Redundant / fault-tolerant system | CPU 417H series (6ES7417-x) |
| Migration to modern platform | S7-1500 CPU 1518 (6ES7518-x) |
| Direct replacement, same rack | 6ES7400-2JA10-0AA1 (this model) |
Quality Assurance & Sourcing
All modules supplied by Konmask.com undergo the following verification process:
- ✅ Visual inspection for physical damage, counterfeit markings, and label authenticity
- ✅ Firmware version verification against Siemens official documentation
- ✅ Functional power-on test where applicable
- ✅ Traceability documentation available on request
- ✅ Secure anti-static packaging for international shipment
We source from authorized distributors, certified secondary market suppliers, and verified industrial surplus channels. Certificates of conformity and test reports are available upon request for qualified buyers.
How to Order
- Confirm your part number: 6ES7400-2JA10-0AA1
- Specify quantity and required delivery timeline
- Contact us for bulk pricing, lead time, and availability confirmation
- Provide your shipping address and preferred freight method (DHL / FedEx / sea freight)
- Receive proforma invoice → confirm payment → dispatch with tracking
📧 Email: support@konmask.com
📞 Phone/WhatsApp: +0086 19859288691
🌐 Website: https://Konmask.com
Replacement & Compatibility FAQ
Q: Is the 6ES7400-2JA10-0AA1 still in production?
A: The S7-400 platform is in a mature lifecycle phase. Siemens continues to supply spare parts, but new projects are recommended to migrate to S7-1500. Contact us for current stock availability.
Q: Can I replace this CPU without reprogramming?
A: A like-for-like replacement (same part number) requires no reprogramming. Cross-model replacements may require project adaptation in STEP 7 or TIA Portal.
Q: Do you supply tested or new units?
A: We supply both new-in-box and tested-used units depending on availability. Condition is clearly stated at time of quotation.
Q: What is the warranty?
A: We offer a 90-day functional warranty on all supplied modules. Extended warranty options are available for volume orders.
Q: Can you supply other S7-400 components?
A: Yes — we stock S7-400 power supplies, I/O modules, communication processors, and interface modules. Contact us with your full BOM for a consolidated quote.
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Contact: support@konmask.com | +0086 19859288691
