RFID: A solution for auto parts coating workshops

As the market competition in the automobile market intensifies, the demands of automobile manufacturers on suppliers are getting higher and higher, from the quality of supply to the cycle have been improvedNow there are auto factory parts suppliers such as jewelry requirements are ordered in the morning to get in the afternoon, and the sample color random is very large, the traditional manual work methods obviously can not adapt to such requirements, so it is natural to introduce identification system in the production processin the automobile manufacturing industry, radio frequency identification (RFID) system application is more common, the following to the United States EMS company's products as an example to introduce RFID products in an auto parts coating workshop application solutionsthis workshop is using the Siemens S7 series PLC and Profibus-DP fieldbus, so the use of EMS CM31 network module, according to the process requirements, CM31 hanging under the four EMS company HMS 820-08 reader, as shown in the figureFrom CM31 to each HMS820 is the MUX32 protocol developed by EMS on the RS485 protocol, which can be hung for a total of 32 per CM31This production process is as followsWorkshop is divided into two floors, the first floor placed an HMS820 writing process parameters, process parameters from the upper machine, the upper machine will be the customer's order information such as trim type, color and other input, from the upper machine to the corresponding code by the PLC will be the information through the network to the first floor to write process parameters OF HMS820, after HMS820 written to HMS150HT high temperature load bit sitter in different process parametersIf necessary, the parameters can also be written via the touch screen on the stationOn the second floor, a total of 3 readers and readers, respectively, placed in 3 processing jobs, each station has a processing robot, when the skid loading ornaments through these readers, readers read out their process parameters and then passed to the robot through the bus, the robot according to these parameters to do the corresponding processing of the ornamentsAfter the last robot, PLC will be the load of all data area zero, so that in the next cycle of the code body, if the first floor reader because of the system or human reasons failed to write parameters, can be written parameters in the corresponding station through the robot operator panel, if the manual does not write, the robot read the process parameters zero will not work, and not in accordance with the previous parameters of processing, improve the safety of the systemhas proved that the system has been put into use, so that the factory has achieved real instant production (JIT), saving liquidity, improve the management level of enterprisessystem to improve the ability: the current process is manually entered on the upper machine, if necessary, through the customer's system and the enterprise's internal management system directly network, so that customers can be through the intranet or directly place orders to the production line, the supply chain and production site directly through, to achieve B2C e-commerce model