This paper introduces an optical fiber temperature measuring system, which supports a popular field bus protocol has a good capability of data communication and can be linked with control network.

介绍一种以微控制器、可编程外围芯片为核心构成的数字化、小型化光纤传感智能温控仪系统。

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HART field-bus protocol is used in output of system pressure or differential pressure transmitter, digital signals is transmitted with MODBUS via RS485.

系统压力或差压变送器信号输出采用HART现场总线协议，数字信号传输通过RS485进行MODBUS通讯。

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Foundation Feildbus (FF) is the best promising field bus in process control fi-eld. Smart transmitter based on FF protocol is the newest field bus instrument.

基金会现场总线(简称FF)是当前过程控制领域最有前途的现场总线，FF协议智能仪表是目前新一代现场总线仪表。

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