6ES5 376-1AA11 6ES5 376-0AA11 6ES5 376-0AA21 6ES5 376-1AA31 6ES5 377-0AA11 6ES5 377-0AA21 6ES5 377-0AA32 6ES5 377-0AA31 6ES5 377-0AB31 6ES5 377-0BA31 6ES5 420-4UA13 6ES5 420-4UA14 Siemens SIMATIC series PLC, born in 1958, has experienced C3, S3, S5, S7 series 6ES5 420-4UA14, has become widely used in the programmable controller. 6 generations a Siemens products Siemens (SIMATIC) PLC was first put on the market in 1975 SIMATIC S3, it is actually a simple user interface with binary controller. 2,1979 years, S3 system was replaced by SIMATIC S5, the extensive use of a microprocessor system. 3,20 early 1980s, S5 system further upgrade --U series PLC, the more common models: S5-90U, 95U, 100U, 115U, 135U, 155U. S5 cards 6ES5755-3AA11 6ES5373-1AA61 6ES5752-0AA23 6ES5376-1AA11 6ES5373-1AA81 6ES5376-1AA21 6ES5376-1AA31 6ES5752-0AA43 6ES5755-3AA11 6ES5373-0AA41 6ES5752-0AA62 6ES5755-4AA11 6ES5490-8MB11 6ES5777-0BC00 best to PLC power for 15 minutes (to the internal capacitor charging) 6ES5 420-3BA11, power outages 6ES5, change within five minutes good new battery, then power to try. Siemens PLC have with the card, there is without a battery; there with a card with battery. Programs exist MMC card, if no memory card, you need a battery to save the program, be sure to pay attention when replacing the battery 6ES5 400-7AA12, when charged, will take out the old batteries and new batteries can be replaced. 6ES5 405-7AB11, 6ES5, Ltd. Shenyang on people by the people on the Shenyang Electric. 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!