6ES7312-5BE03-0AB0 CPU312C, 32K memory 10DI / 6DO 6ES7312-1AE13-0AB0 CPU312, 32K memory 6ES7313-5BF03-0AB0 CPU313C, 64K memory 24DI / 16DO / 4AI / 2AO 6ES7313-5BG04-0AB0 CPU313C, 64K memory 24DI / 16DO / 4AI / 2AO 6ES7313-6BF03-0AB0 CPU313C-2PTP, 64K memory 16DI / 16DO 6ES7313-6CF03-0AB0 CPU313C-2DP, 64K memory 16DI / 16DO 6ES7313-6CG04-0AB0 CPU313C-2DP, 64K memory 16DI / 16DO 6ES7314-1AG14-0AB0 CPU314 96K memory 6ES7314-6BG03-0AB0 CPU314C-2PTP 96K memory 24DI / 16DO / 4AI / 2AO 6ES7314-6CG03-0AB0 CPU314C-2DP 96K memory 24DI / 16DO / 4AI / 2AO 6ES7315-2AG10-0AB0 CPU315-2DP, 256K memory 6ES7315- 2AH14-0AB0 CPU315-2DP, 256K memory 6ES7315-2EH14-0AB0 CPU315-2 PN / DP, 384K memory 6ES7317-2AJ10-0AB0 CPU317-2DP, 512K memory 6ES7317-2EK13-0AB0 CPU317-2 PN / DP, 1MB memory 6ES7317- 2AK14-0AB0 CPU317-2 PN / DP, 1MB memory 6ES7318-3EL00-0AB0 CPU319-3 PN / DP, 1.4M memory Answers ---- ---- Siemens with its wonderful ---- Shanghai Yun Chi Cheng practice in a letter to the letter ---- Germany's Siemens (SIEMENS) company's programmable controller in our country is quite widely in the fields of metallurgy, chemicals, printing production lines have applications. Siemens (SIEMENS) PLC products, including the company's LOGO, S7-200, S7-1200, S7-300, S7-400 and so on. Siemens S7 series PLC is small, fast, standardized, with network communications capabilities, powerful, high reliability. S7 series PLC products can be divided into micro-PLC (eg S7-200), small-scale performance requirements PLC (eg S7-300) and the high performance requirements of the PLC (eg S7-400) and so on. Programmable controller is required by modern production arising from the classification of programmable controllers are bound to comply with the demands of modern production. Generally speaking from the perspective of three programmable controller for classification. One is from the control size programmable controller to classify, and the second is from a performance level of the programmable controller to classify, the third is from the structural characteristics of the programmable controller to classify. Control the size can be divided into mainframe, midrange and minicomputers. Siemens PLCS7-200 series minicomputer: minicomputer control points within 256 points of general, adapted to control stand-alone control or small systems. Siemens minicomputer has S7-200: processing speed of 0.8 ~ 1.2ms; memory 2k; Digital 248 points; 35 analog way. Midrange: Control Point midrange generally not more than 2048 points that can be used to directly control the devices, but also on a plurality of lower-level programmable controller for monitoring, it is suitable to control medium or large control systems. Siemens Siemens PLCS7-300 series medium machine has S7-300: processing speed of 0.8 ~ 1.2ms; memory 2k; Digital 1024; 128 analog; network PROFIBUS; Industrial Ethernet; MPI. Mainframe: mainframe control point is generally greater than 2048, not only to complete more complex arithmetic operations but also for complicated matrix operations. It not only can be used to directly control the devices, but also on a plurality of lower-level programmable controller can be monitored. Siemens mainframes have S7-400: processing speed 0.3ms / 1k words; Siemens PLCS7-400 series memory 512k; I / O points 12672; microprocessor processor each binary instruction time to reach 200 - 400 ns. Extended memory; 32 KB RAM associated with the high-speed program execution component (equivalent to approximately 10 K instructions) can provide sufficient space for the user program; SIMATIC Micro Memory Card (up to 4 MB) as load memory program, but also allows the project (including symbols and comments) are stored in the CPU. Flexible expansion capabilities; up to 8 modules (1 row structure) MPI multi-point interface: integrated MPI interface can establish S7-300 / 400 or programming device, PC, OP of six simultaneous connections. In these connections, always for the programmer and OP were reserved for a connection. By "global data communication", MPI can be used to create up to 16 CPU consisting of a simple network. Built-in input / output; 10 digital inputs (can be used for alarm processing) and six digital outputs for connection to process signals CPU 312C.