JPS6177346A - Terminal of multiple transmitter - Google Patents

Abstract

PURPOSE:To contrive the MT-conversion and miniaturization of the terminal main body and the cost reduction by a method wherein an LSI, a variety of circuit elements, and address setting switch are mounted on a piece of print board, and pat of DIL terminals are made as mode switch terminals, then the cover having a window is filled with filler. CONSTITUTION:Besides an LSI 2 which constitutes a signal processing logic circuit A, I/O circuits B and C for this circuit A, a power source circuit D, circuit elements 3... constituting peripheral circuits such as a mode setting circuit F and a signal input circuit E, and an address setting switch 4 are mounted on the print board 1. Besides, DIL terminals 5... are projected out of this print board 1: these DIL terminals are I/O terminals of the terminal and mode switch terminals to adapt the circuits on this print board 1 for a various kind of terminals. A print board 1 with a construction of circuits as above-mentioned is provided with a cover 7 having a window 6 through which only 6 the top operation part of the switch 4 is exposed, and this cover 7 is filled with a suitable filler and molded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention has various terminal devices for relay control, contact input, switches, etc., and is capable of monitoring and controlling these terminal devices using a time division multiplex transmission method. 0 [Background Art] Conventionally, in this type of multiplex transmission equipment, terminal devices for relay control, contact input, switches, etc. are used for each purpose depending on the type of terminal. A suitable circuit was constructed and mounted on a printed board.

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. There was a problem with the appearance of

[Purpose of the invention]

The present invention creates a 7 joule that can be used as a terminal for various purposes, converts the main body of the terminal into MT, and provides a terminal for multiplex transmission equipment that is smaller and lower in cost and has improved reliability. The purpose is to

[Disclosure of the invention]

FIGS. 1(a) and 1(b) show an exploded perspective view and a perspective view of one embodiment of the present invention.
The circuit elements 13) constituting the ground path 1 and the address setting switch (4) are mounted, and from this printed board (1) there is a D
IL terminal (6)... is provided protrudingly, and this DIL terminal (5)
)... are the input/output terminals of the terminal, and mode switching terminals for adapting the circuit on this printed board +1) to various terminals. Here, the circuit configured on the printed board (1) is as shown in the block diagram of FIG.
The input circuit wSB, the output circuit C1, the power supply circuit D1, the signal input circuit E1, the mode setting circuit F1, the address setting switch (4), etc. are formed around the signal processing 0 thick circuit A configured as I(2+). This printed board (
1) A concrete example of the above circuit is shown in FIG. 3, and the same numbers and symbols in the figure indicate the same parts.

In this way, the circuit board (11) was constructed with the circuit as described above.
On the top is a cover (6) that has a window (6) that exposes only the top operation section of the Atos setting switch (4).
7) is provided, and the inside of the cover (7) is filled with an appropriate filler and sealed.

〔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 has the effect of achieving MT, miniaturization, and cost reduction. V: By ensuring reliability as a joule, it has the effect of making it extremely easy to deploy it as a terminal device for various uses.

[Brief explanation of the drawing]

Figures 1 (a) and (b) are an exploded perspective view and perspective view of one embodiment of the present invention, Figure 2 is a lock diagram of an example of a circuit configured on the same printed board, and Figure 3 is the same as the above. The specific circuit cause of the circuit in Figure 2 is as follows: 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 °C-mode setting circuit, and (1) is a printed board. , (2) is LSI, +3)
Fi circuit element, (4) is address setting switch, (5)
is the DIL terminal turtle, (6) is the window, and (7) is the cover. ′

Claims (1)

[Claims] (1) An LSI that constitutes a signal processing logic circuit, various circuit elements that constitute its input/output circuit, power supply circuit, mode setting circuit, etc., and an address setting switch are mounted on a single printed board. DIL from printed board
A portion of this DIL terminal is protruded to serve as a mode switching terminal for adapting it to various terminal devices such as relay control, contact input, and switches, and a window is provided to expose the address setting switch. A terminal device for multiplex transmission equipment, characterized in that a cover is provided on the printed board, and a filler is filled in the cover.