Siemens PLC spares and automation solutions
Industrial automation solutions built on Siemens PLC platforms, supporting system upgrades, spares replacement and lifecycle management.
Request a quote: Siemens
Tell us what you need. An engineer replies with availability, lead time and price.
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Typical Siemens requests
- SIMATIC S7-300, S7-1200 and S7-1500 modules
- SIMATIC HMI panels
- SINAMICS and MICROMASTER drives
- Power supplies and communication processors
- Migration planning from older S7 platforms
How we handle siemens requests
Send the 6ES7 number
The full order number on the module is the fastest route to an accurate quote.
Lifecycle thinking
If a platform is nearing end of life, we help you plan between a like-for-like spare and a staged upgrade.
About siemens from Precision Spares
Siemens is one of the most widely installed automation platforms in South African industry, with SIMATIC PLCs controlling everything from water treatment plants and food processing lines to mining operations and manufacturing facilities. The longevity of the platform — spanning the S7-300, S7-1200 and S7-1500 generations — means that plants often run multiple generations of Siemens hardware simultaneously, each with different spares requirements. We support Siemens-equipped plants with a comprehensive spares sourcing service that covers the full SIMATIC range.
The Siemens S7-300 platform, though now classified as a mature product by the manufacturer, remains in service at hundreds of South African plants and is still widely supported by automation engineers. We source S7-300 CPUs, digital and analogue I/O modules, power supplies and Profibus communication processors from local and international stock. For newer installations, the S7-1200 and S7-1500 platforms offer compact and high-performance control respectively, and we supply the full range of current-generation modules including the latest firmware revisions.
Beyond spares, we provide lifecycle management support for Siemens platforms, helping plants plan for obsolescence as the manufacturer transitions products to end-of-life status. When a module becomes discontinued, we advise on the available options — sourcing remaining stock, migrating to a supported replacement, or planning a staged system upgrade. Our engineers are experienced with TIA Portal programming and can assist with program migration, commissioning and documentation for systems transitioning between Siemens generations. Whether you need a single urgent CPU replacement or a multi-year lifecycle plan for your installed Siemens base, we provide the expertise and sourcing capability to keep your plant running.
Common questions
Can you source older S7-300 modules?
Send the order number and we will check availability, and advise on options if a direct match is no longer available.
What is the difference between S7-1200 and S7-1500?
S7-1200 is a compact controller for smaller applications, while S7-1500 is a high-performance platform for larger systems. We can advise on the right fit.
Can you help migrate from S7-300 to S7-1500?
Yes. We support migration planning including hardware, program conversion and commissioning.
Do you supply Siemens HMI panels?
Yes. SIMATIC HMI panels from the KTP series up to the Comfort Panels are part of our range.
What is the lead time for Siemens spares?
Common modules are often available locally. Less common or discontinued items take longer, which we confirm with the quote.
Can you supply SINAMICS drives?
Yes. SINAMICS G120, S120 and V20 drives are among the most common we source.
Do you support TIA Portal programming?
Yes. Our engineers work with TIA Portal for S7-1200 and S7-1500 programming and commissioning.
Can you supply a replacement CPU for my S7-400 system?
Send the order number and we will check availability. S7-400 is a mature platform but many modules are still sourceable.
What firmware version do I need for a replacement module?
The firmware version on the module label tells us. We match it to your existing system to ensure compatibility.
Do you supply Profibus and Profinet communication modules?
Yes. CP and CM communication processors for Profibus and Profinet are part of our regular Siemens range.
Ready to request a quote?
Send the part number or a photo of the nameplate for siemens. An engineer replies with availability, source, condition and lead time.
Request a quote: Siemens
Tell us what you need. An engineer replies with availability, lead time and price.
1/2
Need it urgently?
Call or WhatsApp the nameplate. Every day, 07:00 to 17:00. Part discontinued? How we source obsolete parts.