Resources
Practical selection guides and buying tips written by our automation engineers — free, no registration required.
Where to Buy Obsolete Siemens Parts: A Guide to Legacy PLC and Automation Spares
Legacy automation equipment can remain productive for many years, but an unexpected failure becomes difficult when the required CPU, I/O card, HMI or dr...
Read guide → How to Identify a Siemens Part Number (MLFB) and Find the Correct Replacement
The most valuable piece of information in an automation spare-parts request is the complete Siemens MLFB/order number. It identifies the product configu...
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Siemens PLC Programming with TIA Portal: A Beginner Practical Guide
TIA Portal is used to configure and program Siemens automation systems. For beginners, the fastest way to reduce commissioning risk is to treat programm...
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How to Choose a Siemens HMI: Basic Panels, Comfort Panels and Unified Panels
An HMI is the operator's window into a machine or process. Choosing one by screen size alone can create expensive integration problems. A practical...
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Siemens VFD Fault Codes Explained: Common SINAMICS Drive Errors and Fixes
Variable-frequency drives are central to pumps, fans, conveyors, mixers, compressors and machine axes. When a Siemens SINAMICS drive shows a fault, the...
Read guide → Siemens SINAMICS V20 Fault Codes: Causes, Troubleshooting and Reset Methods
A SINAMICS V20 fault code is a diagnostic signal, not a repair instruction. Repeatedly resetting a drive without identifying the cause can damage equipm...
Read guide → Siemens S7-300 PLC Modules: CPU, I/O, Power Supply and Communication Guide
An S7-300 PLC is a modular system, not a single product. If one module fails, the replacement must match the function, electrical characteristics, insta...
Read guide → Siemens S7-300 Replacement Guide: Compatible Upgrade Options and Spare Parts
When an S7-300 PLC fails, the fastest answer is not always an upgrade. Existing systems may depend on an exact CPU, power supply, communication processo...
Read guide → Siemens S7-1200 vs S7-1500: Which PLC Is Right for Your Application?
The S7-1200 and S7-1500 are both widely used Siemens SIMATIC PLC families, but they serve different project requirements. The correct choice depends les...
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