It is introduced in this paper that a method to improve the real-time protocol based on Ethernet, referring to Profibus DP field-bus protocol.
对通讯协议以及以太网实时协议改进的研究是对工业自动化系统底层次融合问题的一种探讨。
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。
A multiple protocol converter developed by using protocol conversion principle is introduced finally, it supports industrial Ethernet and multiple field bus technology conversion.
最后介绍了采用协议转换原理研究开发的一种支持工业以太网与多种现场总线技术转换的多协议转换器。
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。
HART protocol which is the transitional protocol of field-bus allows transferring both digital signal and analog signal simultaneously in order to actualize bidirectional communication.
HART协议是现场总线的一种过渡性协议，可使数字与模拟信号同时传送且互不干扰，实现双向通讯。
HART communication protocol which belongs to transitional protocol introduced in this paper is rudiment of field bus, which permits transmitting digital signal on analog signal circuit.
HART协议是现场总线的一种过渡性协议，可使数字与模拟信号同时传送且互不干扰，实现双向通讯。
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。
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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