Field bus system

阅读:357发布:2023-01-09

专利汇可以提供Field bus system专利检索,专利查询,专利分析的服务。并且PURPOSE: To improve the reliability of communication in the use of a parallel wire and to extend the length of a usable transmission line by reducing crosstalk between transmission lines.
CONSTITUTION: Field devices 1
a , 1
b , 1
c are operated with power supplied from an external power supply 4 via a transmission line 5 and the communication of a digital signal is implemented in bi-direction by a host device. Through the constitution above, a parallel wire is employed for the transmission line 5 and a terminator 7 to reduce the transmission signal is connected to the field devices 1
a , 1
b , 1
c and the host device 3. Thus, the communication current flowing to the transmission line 5 is reduced to reduce crosstalk between the transmission lines. In addition, a method of reducing the impedance of terminators 6
a , 6
b , a method of switching the communication current of each device or a method employing a special wiring for the transmission line is adopted to reduce the crosstalk.
COPYRIGHT: (C)1992,JPO&Japio,下面是Field bus system专利的具体信息内容。

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