We are suppliers and distributors of Siemens PLCs in India, including S7-200 SMART, S7-1200, S7-300, S7-400 and S7-1500, along with PLC panels. Get the best price, GST invoice and fast delivery to Mumbai, Pune, Delhi, Bangalore, Chennai, Hyderabad and all major cities. Send the model number and get a quote.
Last updated: 29 October 2026
Siemens S7-200 SMART PLC
The SIMATIC S7-200 SMART is a micro PLC known for its small size, fast real-time response and simple hardware and software. It offers digital, analog, special and communication modules and is programmed with STEP 7-Micro/WIN SMART. It is the current version used for new small automation projects.Siemens S7-1200 PLC
The S7-1200 is a compact modular controller with built-in PROFINET, used in machine building and plant construction for open-loop and closed-loop control. It is programmed in TIA Portal (STEP 7 Basic), which covers hardware and network configuration, program upload and download, and diagnostics. SIMATIC HMI Basic Panels are configured with WinCC Basic in the same environment.Siemens S7-300 PLC
The S7-300 is a powerful, compact and cost-effective modular controller that saves installation space. It supports a wide range of expansion modules and can connect to remote I/O, making it a good choice for manufacturing automation in the low to mid performance range.Siemens S7-400 PLC
The S7-400 is the most powerful controller in the classic SIMATIC range, with excellent communication capability and integrated interfaces. It suits complex tasks such as process control and system coordination. CPU performance is scalable, remote I/O capacity is very high, and signal modules can be installed or replaced while the system is running (hot swapping).Siemens S7-1500 PLC
The S7-1500 is Siemens' advanced controller for fast and demanding applications, with strong diagnostics and security functions. Software controllers are also available for SIMATIC industrial PCs, combining PC-based solutions with the reliability and availability of SIMATIC controllers.Siemens PLC Comparison
| Series | Type | Best for | Software |
|---|---|---|---|
| S7-200 SMART | Micro PLC | Small machines, simple control | STEP 7-Micro/WIN SMART |
| S7-1200 | Compact PLC | Small to mid-size machines | TIA Portal |
| S7-300 | Modular PLC | Manufacturing automation | STEP 7 / TIA Portal |
| S7-400 | High-end modular PLC | Process control, large plants | STEP 7 / TIA Portal |
| S7-1500 | Advanced PLC | High-speed, complex machines | TIA Portal |
Siemens PLC CPU Models We Supply
| Series | Common CPU models | Programming software |
|---|---|---|
| S7-200 SMART | CPU SR20, ST20, SR30, ST30, SR40, ST40, SR60, ST60 (SR = relay output, ST = transistor output) | STEP 7-Micro/WIN SMART |
| S7-1200 | CPU 1211C, 1212C, 1214C, 1215C, 1217C | TIA Portal (STEP 7 Basic / Professional) |
| S7-300 | CPU 313C, 314C-2 PN/DP, 315-2 PN/DP, 317-2 PN/DP, 319-3 PN/DP | STEP 7 V5.x / TIA Portal |
| S7-400 | CPU 412, 414, 416, 417 and fault-tolerant H-series CPUs | STEP 7 V5.x / TIA Portal |
| S7-1500 | CPU 1511-1 PN, 1513-1 PN, 1515-2 PN, 1516-3 PN/DP, 1518-4 PN/DP | TIA Portal (STEP 7 Professional) |
Model availability depends on stock. Send the exact MLFB number to confirm.
Which Siemens PLC Should You Choose?
- Small machine, simple control: S7-200 SMART or S7-1200.
- Small to mid-size machine with PROFINET: S7-1200.
- New project needing speed, diagnostics and security: S7-1500.
- Spares, repair or expansion of an existing plant: S7-300 or S7-400.
- Large process plant, high availability: S7-400 (including H-series) or S7-1500.
Frequently Asked Questions
What is the difference between Siemens S7-1200 and S7-1500?
S7-1200 is a compact PLC for small to mid-size machines and basic automation. S7-1500 is a higher-performance controller for larger, faster and more complex applications with stronger diagnostics and security. Both use TIA Portal and have built-in PROFINET.
Which software is used to program Siemens PLC?
S7-1200 and S7-1500 are programmed in TIA Portal (STEP 7). S7-200 SMART uses STEP 7-Micro/WIN SMART. S7-300 and S7-400 use STEP 7 classic or TIA Portal.
Which Siemens PLC is best for a small machine?
For small machines and simple control, S7-200 SMART or S7-1200 is the usual choice. For higher speed, more memory and advanced diagnostics, choose S7-1500.
What is the price of Siemens PLC in India?
Price depends on the exact model, CPU and I/O modules. Send the order number (MLFB) and we will share the best price and availability.
Do you deliver Siemens PLC across India?
Yes, we supply Siemens PLCs to Mumbai, Pune, Delhi, Bangalore, Chennai, Hyderabad, Kolkata, Ahmedabad and other cities across India.
What is an MLFB number on a Siemens PLC?
MLFB is the Siemens order number printed on the module, for example 6ES7214-1AG40-0XB0 for an S7-1200 CPU 1214C DC/DC/DC. Sending the exact MLFB helps us confirm the correct model and quote quickly.
Can S7-1200 and S7-1500 be programmed with the same software?
Yes, both are programmed in TIA Portal. S7-1200 can be programmed with STEP 7 Basic or Professional, while S7-1500 needs STEP 7 Professional.
Should I choose S7-300 or S7-1500 for a new project?
For new projects S7-1500 is generally the better choice because it is the current generation with stronger performance, diagnostics and security. S7-300 and S7-400 are mainly used for spares, repair and expansion of existing plants.
Will I get a GST invoice with Siemens PLC purchase?
Yes, we provide a GST invoice with every Siemens PLC order.
Why Buy Siemens PLC from plc-hmi-supplier
- Siemens S7-200 SMART, S7-1200, S7-300, S7-400 and S7-1500 PLCs, plus PLC panels
- GST invoice with every order
- Supply to Mumbai, Pune, Delhi, Bangalore, Chennai, Hyderabad, Kolkata, Ahmedabad and other cities across India
- Quick quote when you send the model number or MLFB
Related Siemens PLC Pages
Explore model-wise pages: Siemens S7-200 SMART, Siemens S7-1200, Siemens S7-300, Siemens S7-400, Siemens S7-1500, Siemens S7-200CN, Siemens ET200SP, Siemens ET200S and Siemens ET200M.
Get a Siemens PLC Quote
Send us the Siemens model number or MLFB (order number), required quantity and delivery city. We will reply with the best price and availability.
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