Original Siemens S7-300 S7-400 PLC CPU Logic Board Spare Parts
Extend the operational life of your legacy Siemens S7-300 and S7-400 systems with our high-grade internal spare boards. These logic cards and communication backplanes are the perfect solution for repairing existing 6ES7 series modules. Each board is meticulously inspected to ensure seamless logic execution and original industrial-grade reliability.
Product Highlights
- Verified Compatibility: Guaranteed to fit 6ES73xx and 6ES74xx series frames
- Cost-Efficient: Replace only the failed internal PCB instead of the entire unit
- Fully Tested: Power-on and I/O diagnostic tested before shipment
- Fast Lead Times: Large stock available for same-day dispatch
Models & Parameters
| Part Number |
Description |
Function |
System Fit |
| 6ES7315-2AG10-0AB0 |
CPU 315-2DP Logic Card |
Main Logic |
S7-300 |
| 6ES7317-2EK14-0AB0 |
CPU 317-2PN/DP Card |
Logic Unit |
S7-300 |
| 6ES7414-3XM05-0AB0 |
CPU 414-3 Motherboard |
Central Unit |
S7-400 |
| 6ES7153-1AA03-0XB0 |
IM153-1 Comms Board |
Interface |
ET 200M |
| 6ES7490-1AA00-0AA0 |
Rack Bus Connector |
Bus PCB |
S7-400 |
Application Fields
- Automotive Production: Robotic assembly and welding line PLC logic
- Oil & Gas: Pipeline monitoring and safety shutdown systems
- Power Plants: Distributed control for turbine synchronization
- Food & Beverage: High-speed logic for packaging machinery
Frequently Asked Questions
Compatible with E-Stand?
Yes, we match hardware revisions for stability.
New or Refurbished?
Both options available with full test reports.
Firmware needed?
Usually, boards are ready for parameter loading.
Anti-static packing?
Yes, shipped in ESD shielding bags.
Shipping?
3-5 days via DHL/FedEx to USA/Europe.
Technical support?
We provide basic board installation guidance.