Replaceable modular passive serial interface device

Abstract

The invention relates to the communication technical field, in particular to a replaceable module-type passive serial port interface device. The device comprises a PCB mainboard, an interface replacement module and a rear panel of a chassis; the invention is characterized in that one end of the PCB mainboard is connected with a connector pin end of a socket connector; the socket pin end of the socket connector is connected with one end of a PCB printed circuit board; the PCB printed circuit board, an interface and an interface chock block form the interface replacement module; the interface is arranged on the PCB printed circuit board; the serial port end of the interface is provided with the interface chock block which is connected with the rear panel of the chassis; and the socket connector connects and transmits a RS232 / RS422 / RS485 serial port level signal without barrier to form the information exchange and control of terminal equipment. The replaceable module-type passive serial port interface device has the most advantage of only designing the corresponding PCB printed circuit board with the serial port interface separately when different serial port interfaces are needed, thereby avoiding the repeated design of the mainboard PCB.

Description

A replaceable modular passive serial interface device [technical field] The invention relates to the fields of communication technology and industrial automation control, in particular to a replaceable modular passive serial port interface device. [Background technique] Serial communication is the most widely used means of communication in the industrial field. The software and hardware of serial communication have low cost and high reliability, and have won strong support from the majority of equipment manufacturers. At the same time, the form of the serial port connector has different requirements due to the user's usage habits or the connection requirements of the field devices. Commonly used output connector forms include DB9, DB25, RJ45 and row terminals. Conventional products are to select a certain connector of the serial port and solder it directly on the entire PCB main board. If you want to change the serial port connector, you can adopt the following methods: ...

AI Technical Summary

Problems solved by technology

The problem of method ① is that the cost is high; the problem of method ② is: the operation is inconvenient and not beautiful

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