# What are the Models of SIEMENS PLC? **URL:** \ **Category:** Siemens\ **Tags:** plc\ **Created:** [December 15, 2020, 5:36am UTC](https://forumautomation.com/t/what-are-the-models-of-siemens-plc/8961 "2020-12-15T05:36:37Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![Ajmal\_ismail](https://forumautomation.com/letter_avatar_proxy/v4/letter/a/e9a140/32.png) [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Post date:** [December 15, 2020, 5:36am UTC](https://forumautomation.com/t/what-are-the-models-of-siemens-plc/8961/1 "2020-12-15T05:36:37Z")
**Siemens** is a German MNC headquartered in Munich founded by **Ernst Werner** Siemens in 1847. It is the largest industrial manufacturing company in Europe. **Types of Siemens PLC** Based on your suitable applications and requirements, Siemens PLCs are classified into 1)LOGO PLC 2)S7 200 Smart PLC 3)S7 200 PLC 4)S7-300 5)S7-400 6)S7-1200 7)S7-1500 **LOGO PLC** ![image](https://cdn.forumautomation.com/original/2X/e/ea0a0e3e9cc0792e7908b46f39bceb7a7a30afff.png) **Logo PLC** is a very basic model of Siemens PLC. So, its I/O handling capacity is very low. This type of PLC mainly used in small-scale industries. **Logo! soft software** is used for programming purposes. **Disadvantages:** Need physical access to program it Complexity exceeds the amount of available programming instructions **S7 200 Smart PLC** ![image](https://cdn.forumautomation.com/original/2X/d/d89e5680c66aeb703744afa8148c2dc1c6306964.jpeg) It’s a Compact - modular type PLC. It is also used for small scale industry like Logo PLC It has 38 Analog I/O capacity and 256 Digital I/O capacity RS485 communication port is available. **Step 7 Microwin** is the software used for programming purpose **S7-300** ![image](https://cdn.forumautomation.com/original/2X/0/0be610abe59f8bbe65f02badcf203c3f4549b5a0.jpeg) It is a bus-linked platform (a serial connector to all modules) This is a mini modular PLC for the low and mid-range applications Can expand the I/O without any issues when the tasks increase but there is limit foe expansion. It has inbuilt motion control applications. User-friendly handling and uncomplicated design For S7-300 you can use two software for programming 1)Step 7 V5.x + WinCC flexible 2)TIA Step 7 Professional + TIA WinCC It is available in a) Standard b) Compact c)failsafe d)Technology T version **S7-300f** It is also based on S7-300 It has fail-safe automation system for plants with safety requirements for production technology It had ET 200s and ET 200M distributed I/O stations. We can connect safety-related modules via PROFIBUS DP with PROFIsafe profile For S7-300 you can use two software for programming 1)Step 7 V5.x + WinCC flexible 2)TIA Step 7 Professional + TIA WinCC **S7-400** ![image](https://cdn.forumautomation.com/original/2X/6/6ae874339440db7cb171caec64a3a1ba3e9a8a67.jpeg) It is a rack-based system that means a Multi-pin backplane linking all modules from power supply to I/Os. S7-400 designed for system solutions for manufacturing and process automation. This process controller is suitable for data-intensive activities that are exceptionally common for the process industry. S7-400 CPU available in a) Standard b) Failsafe F c)High availability H Software used for programming are 1)Step 7 Basic 2)TIA Portal **S7-1200 Signal Modules** ![image](https://cdn.forumautomation.com/original/2X/4/4d46bc658b450f89ae6e8103d094d208b20ed7b3.jpeg) S7-1200 have a compact configuration and can be used in a wide variety of applications SIMATIC S7-1500/ET 200MP signal or peripheral modules are the interfaces between the controller and the process. They can be used centrally on the SIMATIC S7-1500 CPU or on the decentralized SIMATIC ET 200MP peripheral system. It has a very high processing speed. It comes with an integrated power supply and onboard digital I/Os and onboard analog I/Os It also has high-speed motion control I/O. Can be added communication board, battery board, or signal board without affecting the size of the CPU. PROFINET isochronous real-time (IRT) for maximum quality Shortest input delay of 50 μs for Digital input modules Quick analog modules with a conversion time of 62.5 μs or 125 μs for 8 channels TIA Portal software used for programming **S7-1500** ![image](https://cdn.forumautomation.com/original/2X/b/b3614dd3efeb1ad5567c8610cb7c2395c6e55982.png) It is designed for fast market changes. CPUs, I/O modules, and commination modules can be added, up to 32 expansion modules, as needed to fit your project. S7-1500 has an inbuilt display and keypad that allows for basic configuration and diagnostics. It has a scalable configuration that incorporates a CPU at least one system power supply module, a communication module, or signal module as needed up to 32 modules It has inbuilt PROFINET ports It is available in a) Standard b) Failsafe F. **Step 7 TIA Portal software** is used for programming S7-1500.