Siemens released the small PLC S7-1200 in May 2009, and its software platform TIA botu is v10.5. The shape of S7-1200 is similar to that of S7-200. The price is slightly higher than that of S7-200, but the function is much more powerful than that of S7-200. S7-1500 and TIA botu V12 were released in march2013.

TIA botu is a new engineering design software platform of Siemens automation. It integrates all automation software tools into a unified development environment. The software on TIA botu is intuitive, easy to use and easy to use. Both S7-1200/1500 and S7-300/400 can be programmed using step 7 based on TIA botu. WINCC on the way of TIA Bo is the configuration software for Siemens HMI, industrial PC and standard PC. SIMATIC step 7 Safety on the way of TIA Bo is applicable to the engineering configuration system of standard and fail safe automation. SINAMICS startdrive is the engineering configuration platform applicable to all Siemens drives and controllers. TIA botu, combined with scout software for motion control, can realize the configuration and program editing of SIMOTION motion controller.

The program structure of S7-1200/1500 is the same as that of s7-300/400. The user program consists of code blocks and data blocks. Code block includes organization block, function block and function block. Data block includes global data block and background data block.

The programming languages used in s7-1200/1500 include ladder lad, function block FBD and structured control language (SCL). S7-1500 can also use statement table STL and sequence function diagram S7 graph. S7-300/400 can also use the above programming languages.

S7-1200/1500 is quite different from s7-300/400 and S7-200. The S7-1200/1500 instruction contains some functions, function blocks, system functions and system function blocks in the s7-300/400 library. The s7-1200 instruction set is a subset of the s7-1500 instruction set. The s7-1200/1500 instruction set is more powerful and concise than the s7-300/400 instruction set. For example, the input and output parameters of the "conversion value" command convert (conv) of s7-1200/1500 can be set to more than ten data types, including the functions of more than s7-300/400 instructions.

The CPU of s7-1200/1500 has a PROFINET Ethernet interface, which can communicate with computers, human-machine interfaces, PROFINET i/o devices and other PLCs, and supports a variety of communication protocols. S7-1200/1500 can also realize PROFIBUS-DP communication. S7-1200 and s7-1500 have many of the same communication functions, and their configuration and programming methods are the same. S7-1500 has more powerful communication functions.

The s7-1500 is not expanded through the expansion rack, but through distributed i/o. The ET 200mp uses the same module as the s7-1500 mainframe. Et 200sp is mainly used with s7-1200/1500.

S7-1500 has standard, process, compact, high protection level, distributed and open, fail safe CPUs, and PC based soft controllers. The CPU has a display screen. Et 200sp CPU has the functions of s7-1500, which is small and cheap.

The diagnosis functions and methods of s7-1200 and s7-1500 are basically the same. S7-1500 can also be diagnosed with the display screen of CPU.

The cost performance of s7-1500 is higher than that of s7-300/400. Compared with s7-300/400, s7-1500 has become the first choice for the control system of new equipment.

If you are interested in PLC and DCS products, you can contact us directly, and we will provide you with answers to any questions in the shortest time.