Exact-Model Product Image
Corresponding product image for 6ES7518-4AX00-1AC0
Selection boundary
Choose this bundle when the application requires the MFP CPU plus the supplied runtime licenses. It is a standard controller, not an F-CPU; projects requiring fail-safe logic should be evaluated against the corresponding S7-1500F architecture.
6ES7518-4AX00-1AC0 Product Overview
The 6ES7518-4AX00-1AC0 is a SIMATIC S7-1500 multifunction CPU bundle based on CPU 1518-4 PN/DP MFP. It includes C/C++ Runtime and OPC UA Runtime licenses, 6 MB of program work memory, 60 MB for data and a dedicated runtime memory environment.
Compatibility and Project Checks
- ✓Engineer the exact MFP hardware and firmware in TIA Portal before downloading the project.
- ✓Confirm application binaries, runtime version and OPC UA configuration for the target CPU.
- ✓Do not substitute a standard CPU when the project depends on C/C++ Runtime or the bundled OPC UA license.
Verified Siemens Technical Data
Official reference: Siemens Industry Mall 6ES7518-4AX00-1AC0. Confirm the installed project against the current Siemens manuals.
Where This CPU Is Typically Used
Engineering Decisions for 6ES7518-4AX00-1AC0
Separate PLC and runtime workloads
Estimate cyclic PLC load, C/C++ tasks and OPC UA communication independently.
Reserve card capacity
The official bundle requires a SIMATIC Memory Card with at least 2 GB.
Map licensing to the delivered bundle
Keep the bundle article and included runtime licenses together in service records.
Validate interface segmentation
Assign deterministic IRT traffic separately from RT, basic services and PROFIBUS devices.
6ES7518-4AX00-1AC0 Frequently Asked Questions
What is included in this article?It is a CPU 1518-4 PN/DP MFP bundle with C/C++ Runtime and OPC UA Runtime.
Is this the fail-safe version?No. This article is the standard MFP CPU bundle.
How much program memory is provided?The official data lists 6 MB for program and 60 MB for data.
What memory card is required?A SIMATIC Memory Card with at least 2 GB is required.
Which networks are integrated?It supports multiple PROFINET roles plus PROFIBUS.
Why use the bundle MLFB?The bundle identifies the CPU together with its included runtime licenses.
Company Support for 6ES7518-4AX00-1AC0
Bundle verification beyond the visible CPU label
For multifunction CPU bundles, our quotation review covers the outer MLFB, base CPU article, included runtime licenses and memory-card requirement. This reduces mismatch risk when an installed project depends on specific MFP capabilities.
Request a 6ES7518-4AX00-1AC0 Quotation
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