6ES5 498-1AA51 6ES5 498-1AA31 6ES5 511-5AA14 6ES5 525-3MA12 6ES5 525-3UA11 6ES5 525-3UA21 6ES5 535-3MA12 6ES5 535-3UA12 6ES5 544-3UA11 6ES5 756-0AA11 control scale can be divided into mainframe, midrange and minicomputers. Siemens PLCS7-300 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 to monitor 6GK1, it is suitable for the control medium or large control systems. Siemens S7-300 Installation Precautions four) output with relay type, transistor type (high-speed output should be selected), the output can be used directly with a light load (LED lights, etc.); Siemens S7-300 Installation Precautions five) Input / off time is greater than PLC scan time; protector Siemens S7-300 Installation Precautions six) PLC output circuit does not protect 6GK1901-1FC00-0, and should therefore be used in series with the external circuit fuses 6GK1901-0AA00-0, to prevent the load short damage PLC; Siemens S7-300 Installation Precautions seven) Keep the AC power cord to the input terminal 6GK1 143-0TA02, so as not to burn PLC; Siemens S7-300 Installation Precautions eight) ground terminal should be independent of the ground, not with Other equipment grounding terminal series, grounding wire cut surface is not less than 2mm2; Siemens S7-300 Installation Precautions nine) input and output signal lines as separate traces, not with the power lines in the same conduit or tied together, in order to avoid interference signal malfunction; signal transmission lines using shielded cable, and the shield to ground; to ensure reliable signal, the input and output lines are generally controlled within 20 meters; extension cables susceptible to noise interference, should stay away from power lines, high voltage equipment, etc. . 6GK1901-0AA00-0_6GK1_ Shenyang on the people by the people on the Shenyang Electric Company. Shenyang Electric Co. on people (www.zsmsy.com) strong, credible, in other industries, such as Shenyang, Liaoning province has accumulated a large number of loyal customers. The company better work attitude and constantly improving people and innovative ideas will lead you to walk hand in hand on the Shenyang brilliant, for a better future!