Third, the maintenance preparation, maintenance of order (1) before the overhaul ready tools; (2) to protect the functional elements of the template does not malfunction and damage AB 1746-BAS, must use protective devices and serious preparations for anti-static; ( 3) maintenance scheduling and operatives before contact is good, need a license at the hang hanging overhaul overhaul cards; 6ES5 456-7LB11 6ES5 458-7LA11 6ES5 458-7LC11 6ES5 460-7LA11 6ES5 460-7LA12 6ES5 460-7LA13 6ES5 470-7LB12 6ES5 470-7LC12 6ES5 470-7LC13 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: General minicomputer control points within 256 points of the AB 1746-OV16, adapted to control or small stand-alone control system. Siemens minicomputer has S7-200: processing speed of 0.8 ~ 1.2ms; memory 2k; Digital 248 points; 35 analog way. Midrange: Midrange control points is generally not more than 2048 points AB 1746-IB16, the device can be used for direct control, but also for a plurality of lower-level programmable controller to monitor its control system suitable for medium or large control. AB 1746-OG16, AB 1746, Shenyang Electric Co., the people on the public offer by Shenyang. 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!