JPH0570939B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention has various terminal devices for relay control, contact input, and switches, and is capable of monitoring and controlling these terminal devices using a time division multiplex transmission method. The present invention relates to terminal equipment for multiplex transmission equipment.

[Background technology]

Conventionally, in this type of multiplex transmission equipment, circuits were configured to suit each purpose depending on the type of terminal device, such as relay control, contact input, or switch, and these were mounted on printed circuit boards. Ta.
For this reason, such conventional examples have the problem of having to design a circuit for each type of terminal device, and also have a large size and poor reliability due to the combination of ICs, transistors, and other circuit elements. I had a problem with points appearing.

[Purpose of the invention]

An object of the present invention is to create a module that can be used as a terminal device for various purposes, convert the terminal device itself into an MT, and provide a terminal device for multiplex transmission equipment that is smaller in size and lower in cost, and has improved reliability. The purpose is to

[Disclosure of the invention]

FIGS. 1a and 1b show an exploded perspective view and a perspective view of an embodiment of the present invention. On the printed board 1, in addition to the LSI 2 constituting the signal processing logic circuit A, the signal processing logic circuit A is also shown. Circuit elements 3 constituting peripheral circuits such as input/output circuits B, C, power supply circuit D, mode setting circuit F, signal input circuit E, etc.
An address setting switch 4 for setting an individual address for each terminal device is mounted, and a DIL terminal 5 conforming to the international terminal arrangement of printed circuit boards protrudes from this printed board 1. …
are input/output terminals of the terminal, and mode switching terminals for adapting the circuit on the printed board 1 to various terminals. As shown in the block diagram of FIG. 2, the circuits configured on the printed board 1 include a signal processing logic circuit A configured as an LSI 2, an input circuit B, an output circuit C, a power supply circuit D, and a signal Input circuit E, mode setting circuit F,
An address setting switch 4, etc. are formed therein, and a specific example of the circuit on this printed board 1 is shown in FIG. 3, and the same numbers and symbols in the figure indicate the same parts.

A cover 7 having a window 6 in which only the upper surface operating section of the address setting switch 4 is exposed to the outside is placed on the printed board 1 on which the circuit as described above is constructed. is filled with an appropriate filler and molded.

〔Effect of the invention〕

Since the present invention is configured as described above, it is not necessary to separately design and manufacture multiple types of terminal devices, and it is possible to implement MT, miniaturize the terminal device, and reduce costs. By ensuring reliability as a module, it has the effect of making it extremely easy to deploy it as a terminal device for various uses. especially,
The DIL terminal protruding from the printed board includes a mode switching terminal that selects the LSI's operating mode, so the circuit on the printed board can be adapted to various terminals by simply changing the connection between the mode switching terminal and the external circuit. It has the advantage of being able to That is,
One type of terminal device can be used to configure multiple types of terminal devices, and by sharing component parts, it has the advantage of promoting so-called MT and leading to cost reduction. .

[Brief explanation of the drawing]

Figures 1a and b are an exploded perspective view and perspective view of one embodiment of the present invention, Figure 2 is a block diagram of an example of a circuit constructed on the same printed board, and Figure 3 is a diagram of the circuit shown in Figure 2 of the same. This is a diagram of a specific circuit example, where A is a signal processing logic circuit, B is an input circuit, C is an output circuit, D is a power supply circuit, F is a mode setting circuit, 1 is a printed board,
2 is an LSI, 3 is a circuit element, 4 is an address setting switch, 5 is a DIL terminal, 6 is a window, and 7 is a cover.

Claims (1)

[Claims] 1. In the terminal equipment of multiplex transmission equipment that has individual addresses and performs monitoring and control by mutually exchanging data using a time division multiplex transmission method, an LSI that constitutes a signal processing logic circuit for multiplex transmission signals and this LSI The printed circuit board includes the circuit elements that make up the peripheral circuit, the address setting switch that sets the address, the LSI, the circuit elements, the address setting switch, and the mode switching terminal that selects the LSI operating mode. It is characterized by having a DIL terminal protruding from the board, a cover that is placed on the printed board and having a window through which the address setting switch is exposed, and a filler is filled in the space surrounded by the printed board and the cover. A terminal device for multiplex transmission equipment.