论文部分内容阅读
This study established a digital communication method between the online mass spectrometer (MAX300-IG) and Distributed Control System (CENTUM-3000) in the sideline unit of a silver catalyst in an industrial setting.RS-485 serial communication with the MODBUS protocol was used and discussed.In order to be able to retain the precision of the data value during data transmission,the paired register technique was used for digital communication via the RS-485 bus interface.