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Product description

The Siemens 6FC5357-0BB23-0AE0 is a central Numerical Control Unit from the SINUMERIK 840D/DE range. As an NCU 572.4, it combines NC processing with the integrated PLC, making it an important replacement module for CNC machine tools whose existing control architecture is to remain in service. This exact version uses an AMD-K6-2 processor and is supplied without system software. The documented identification features also include 0.5 MB of NC memory, 96 KB of PLC memory, and preparation for PROFIBUS-DP. Siemens describes an integrated PLC based on the CPU 314C-2DP for the NCU-572.4 platform; the associated PLC supports up to 32 PROFIBUS slaves and provides 256 timers and counters in each case. These features make the module relevant to maintenance teams replacing a failed NCU while retaining existing fieldbus, PLC, and NC structures. Before installation, compare the complete order number, hardware version, NCU system software, PLC operating system, toolbox version, machine project, and available NC/PLC backups with the original unit. Reliable restoration of the machine-specific data is especially important because the module is not supplied with universally compatible system software. The PROFIBUS configuration and CPU assignment used in the project must also match the specific machine. Existing machine data, PLC blocks, tool data, and compensation values should therefore be fully backed up before the control is replaced and recommissioned. Replacement approval should also include a comparison of the visible hardware version and every connector with the removed unit. The clear NCU 572.4 designation helps exclude similarly named NCU variants with different computing performance, memory configuration, or software basis. For retrofit work, repair stock, and planned downtime reduction, the Siemens 6FC5357-0BB23-0AE0 is therefore a precisely identifiable replacement for established SINUMERIK-840D/DE systems.

Siemens 6FC5357-0BB23-0AE0

Specifications

Manufacturer Siemens
Product range SINUMERIK 840D/DE
Manufacturer / order / identification number 6FC5357-0BB23-0AE0
Device type Numerical Control Unit (NCU)
Device version NCU 572.4
Device type / processor AMD K6-2
Software configuration without system software
NC memory 0.5 MB
PLC memory 96 KB
Communication interface prepared for PROFIBUS-DP
Module role / integrated PLC CPU 314C-2DP
PLC design CPU 314C-2DP, Siemens 6FC5314-6CF00-0AB0
PROFIBUS communication capacity up to 32 slaves
PLC timer capacity 256
PLC counter capacity 256
PLC operating system version 10.60.15 or later for NCU software version 6.3.24 or later
Control cabinet with PLC modules and automation components
Machine downtime in a production environment

Machine downtime?

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Product safety

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FAQ

Frequently asked questions

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What must be considered when replacing the Siemens 6FC5357-0BB23-0AE0?

Compare the complete order number, hardware version, NCU system software, PLC operating system, toolbox version, and the available NC and PLC backups with the original unit.

Is the NCU 572.4 supplied with system software?

No. The 6FC5357-0BB23-0AE0 version is documented without system software; the appropriate machine-specific software and data backup must therefore be available before installation.

Is there a guarantee?

Yes, we provide a 14-day functional guarantee for used items. This means the component must be operational when received.

Please note that the guarantee only applies when the warranty seal is undamaged.

If a defect occurs within 14 calendar days, please contact us in writing. Subject to availability, we will provide a replacement or refund the full purchase price after return.

Further details are provided in the terms and conditions supplied with your quotation.

How quickly do you dispatch and which shipping options are available?

We generally dispatch immediately - in many cases on the same working day. For particularly urgent requirements or machine downtime, we find a suitable solution as quickly as possible and provide a specific delivery window on request.

Express shipping or collection from our premises is also possible, depending on the situation. State your requirements during the ordering process or contact us directly.

We ship worldwide and work with reliable shipping partners, from parcel services to freight forwarding. Freight shipments normally require some preparation so the goods arrive safely and undamaged.

Which payment methods are available?

Payment is normally made by bank transfer against invoice. Payment is due within 10 calendar days of receiving the goods.

As a rule, we offer purchase on account for all customers. In individual cases, such as new customers or particularly high-value components, we may agree advance payment. This decision is made individually and communicated transparently.

Can we return items if they were ordered incorrectly?

Because we sell exclusively to business customers (B2B), there is no general right of return and no consumer right of withdrawal.

Please note that returns of functioning goods are generally excluded. In justified exceptional cases, we can assess an individual solution, but this is not the standard procedure.

Is there a discount when ordering several items?

For larger order quantities or several items of one type, we can offer individual discounts.

Simply send us a quick enquiry - we check availability and will gladly prepare a tailored quotation with quantity pricing.

Do you also purchase industrial spare parts?

Yes, we also purchase automation components, such as frequency inverters, PLC assemblies, panels, servo motors and CPUs. Components from Siemens, Lenze, Schneider Electric, Control Techniques or Heidenhain are especially sought after, and other brands are also possible.

The process is straightforward: email us an inventory list or overview photos at info@reha-industriekomponenten.de. We calculate a market-based purchase price and send you an offer.

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