JP3387116B2 - Electronics - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facility such as a production factory which receives a parallel signal representing command information and detection information from a plurality of switches and converts it into a serial signal. Then, the present invention relates to an electronic device having a reduced wiring terminal device for transmitting the signal to an output device installed at a place remote from the operation means (external input device). 2. Description of the Related Art FIG. 8 shows a conventional electronic device of this kind.
This electronic device includes a CPU 40, an input unit 41 located on the input side of the CPU 40, and an output unit 42 located on the output side of the CPU 40. The input unit 41 has a 16-pole input terminal IN (0). , IN (1),
IN (2) ... IN (15) and 2-pole power supply terminal IN
(+) And IN (−), and the output unit 42
Output terminals OUT (0), OUT (1), O
UT (2) ... OUT (15) and two-pole power terminal OU
T (+) and OUT (−). An external input device (not shown) is connected to the input unit 41 via a wiring-saving terminal device 43, and the output unit 42 is connected to a wiring-saving terminal device 4.
An output device (not shown) is connected to the output device 4 via an external device. The wiring-saving terminal devices 43 and 44 include a transmission-side link terminal 45 and a reception-side link terminal 46, and these link terminals 45 and 46 are connected by a signal line 47 and power supply lines 48 and 49. It consists of. The connection between the input / output units 41, 42 and the reduced wiring terminal devices 43, 44 is performed by connecting the input terminals IN (0), IN (1), IN
(2)... IN (15) and power supply terminal IN (+),
IN (-) and output terminal OUT of link terminal 46
(0), OUT (1), OUT (2)... OUT (1
5) and the power supply terminals OUT (+) and OUT (-)
Are connected by eight wires 50, and output terminals OUT (0), OUT (1), OUT (2),.
OUT (15) and power supply terminals OUT (+), OUT
(-) And the input terminal IN (0) of the link terminal 45,
IN (1), IN (2)... IN (15) and power supply terminals IN (+), IN (−) are connected by 18 wires 51. [0005] However, in the above-mentioned conventional electronic equipment, the input and output units 41 and 42 are not provided.
And the wiring-saving terminal devices 43 and 44 are connected by 18 wires 50 and 51, respectively, and there is a problem that this connection requires a lot of man-hours. [0006] The present invention has been made in view of the above problems, and the first object of the present invention is to provide:
It is an object of the present invention to provide an electronic device that can connect an output unit and a reduced-wiring terminal device by connector connection, thereby reducing man-hours. Another object of the present invention is to provide a link terminal with a built-in connector whose terminal function can be switched to, for example, either I / O15 or ERR by a terminal function switch. Unit with 16 I / O points or 15 I / O points + E
It is an object of the present invention to provide an electronic device capable of selecting one of RR. It is a third object of the present invention to provide an electronic device capable of reducing the number of assembling steps in connection between a connector and a board in a connector built-in type link terminal. In order to achieve the first object, the present invention provides a parallel / serial converter for converting a parallel signal into a serial signal and converting a serial signal into a parallel signal. a combination of a vessel and the connector constitute a connector built-shaped link terminal, as well as connect the signal connection terminals of the serial signal side of the connector built-link terminal at one signal line, + - power supply connection terminal The two terminals are connected by two power lines to form a wiring-saving terminal device, and any one of an n-th connection terminal and an error terminal among a plurality of connection terminals on the parallel signal side of the parallel-serial converter. A terminal function changeover switch for switching the connection to the n-th connection terminal of the connector. According to the above construction, since the link terminal has a built-in connector, the connection between the input / output unit and the reduced wiring terminal device can be performed by connector connection, and the number of steps can be reduced. Further, with the above configuration, in the connector built-in type link terminal, the terminal function can be switched to, for example, either I / O15 or ERR by the terminal function changeover switch, and one unit has one I / O point.
Either 6 points or 15 I / O points + ERR can be selected. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram of a configuration of an electronic device according to the present invention,
FIG. 2 is a plan view of a link terminal with a built-in connector partially omitted, and FIG. 3 is a sectional view of the same. As shown in FIG. 1, a programmable controller (hereinafter, abbreviated as PC), which is an electronic apparatus of the present invention, includes a CPU 1, an input unit 2 located on the input side of the CPU 1, and an output side of the CPU 1. And an input unit 2 having 16 poles IN (0), IN (1), IN (2)... I
A connector unit (not shown) having N (15) and two-pole power terminals IN (+) and IN (-) is provided, and the output unit 3 has 16-pole output terminals OUT (0) and OUT (0).
(1), OUT (2)... OUT (15) and a connector unit (not shown) provided with two-pole power terminals OUT (+) and OUT (−). An external input device (not shown) is connected to the input unit 2 via a wiring-saving terminal device 10, and an output device (not shown) is connected to the output unit 3 via a wiring-saving terminal device 15. Connected. Since both wiring-saving terminal devices 10 and 15 have the same configuration, one wiring-saving terminal device 10 will be described and the description of the other wiring-saving terminal device 15 will be omitted. As described above, the wiring-saving terminal device 10 includes the link terminal 7 with a built-in connector on the transmitting side and the link terminal 8 with a built-in connector on the receiving side.
The connector built-in link terminals 7 and 8 are connected by a signal line 11 and power supply lines 12 and 13. The link terminals 7 and 8 with built-in connectors on the transmitting and receiving sides have a housing 17 as shown in FIGS. 2 and 3, and the housing 17 has a split structure. Board mounting portions 18 are formed at four corners of the inside of the housing, and connector mounting portions 19 are provided at the front side of the housing 17.
Is formed on the rear side of the housing 17, and a terminal exposed portion 20 is formed on the rear side of the housing 17. Further, a support portion 22 for supporting a substrate 21 of an electronic circuit package 30 described later is provided in the housing 17.
Are protruding. Bolt insertion holes 23 are formed on the left and right sides of the housing 17 in the front-rear direction. Tightening bolts 24 for connector fastening are inserted into these bolt insertion holes 23. A connector 25 is mounted in the connector mounting portion 19, and screw holes 26a are formed on the left and right sides of a mounting seat 26 of the connector 25, and these screw holes 26a are formed. Is fastened by tightening the tightening bolt 24. The mating connector connecting portion 25a on the front side of the connector 25 projects forward from the connector mounting portion 19, and a board press-fitting portion 25b is formed at the rear of the connector 25 as shown in FIGS. , This board press-fitting section 2
5b, contact terminals A (0), A of 16 poles are provided on the upper and lower surfaces.
(1), A (2), A (3)... A (15) and one pole are an error combined contact terminal A (ERR) and two pole power contact terminals A (+) and A (−). Is provided. The electronic circuit package 30 has a substrate 21 having mounting notches 21a at four corners, and a parallel / serial converter 28 and the like are mounted at the center of the substrate 21. A signal connection terminal 29, an error connection terminal 31, and +/− power supply connection terminals 32 and 34 are mounted at the rear of the unit 21 side by side in the left-right direction. The distal end of the board 21 is formed with a connector press-fit portion 33, which has 15 contact terminals B (0), B as shown in FIG.
(1), B (2), B (3)... B (14), one-pole error / shared contact terminal B (15 / ERR), and two-pole power contact terminals B (+), B (−) ) Are provided. And
These contact terminals B are plated with gold. The parallel-to-serial converter 28 has 16 connection terminals C (0), C (1), C (2), C
(3)... C (15) and one-pole error connection terminal C
(ERR) and two-pole power supply connection terminals C (+), C (-)
Are provided. Further, the parallel / serial converter 28
To the signal terminal 36 and the power connection terminals C (+), C (-)
The power supply terminals 35 and 37 connected to are provided. The terminal function changeover switch 38 is provided outside the housing 17, the fixed contact 38a thereof is connected to the fifteenth connection terminal C (15), and the fixed contact 38b of the terminal function changeover switch 38 has an error. And the movable contact 38c of the terminal function changeover switch 38 is connected to the 15th error / shared contact terminal B (15 / E).
RR). The signal terminal 36 and the power supply terminals 35 and 37 of the parallel / serial converter 28 are connected to a signal connection terminal 29.
And the power supply connection terminals 32 and 34 of + and-are connected by a pattern. In the electronic circuit package 30, the connector press-fitting portion 33 is connected to the board press-fitting portion 25b of the connector 25.
And the contact terminal B is brought into contact with the contact terminal A and housed in the housing 17. In this case, the board 21 is placed on the board mounting portion 18, and the signal connection terminal 29, the error connection terminal 31, and the +/− power supply connection terminal 32 are exposed from the terminal exposed portion 20. Thus, the connector 25
After the electronic circuit package 30 is incorporated in the housing 17, a resin is injected into the inside and solidified. As described above, since the connection between the connector 25 and the board 21 is performed by press-fitting, the number of assembling steps can be reduced. The signal connecting terminals 29 of the transmitting and receiving side built-in connector type link terminals 7 and 8 are connected by the signal line 11, and the + and-power supply connecting terminals 3 are connected.
The power saving lines 2 and 13 are connected between the power supply lines 12 and 13 to form the wiring-saving terminal device 10. The other wiring-saving terminal device 15 has the same configuration. On the other hand, the wire-saving terminal device 10 has a connector 25 of the link terminal 8 with a built-in connector for reception, fitted and connected to a connector portion of the input unit 2, and a connector of the link terminal 7 with a built-in connector for transmission. 25 is fitted and connected to the connector section on the external input device side to connect the external input device and the CPU 1. The other wiring-saving terminal device 15
The connector 25 of the link terminal 7 with built-in connector for transmission is fitted and connected to the connector portion of the output unit 3, and the link terminal 8 with built-in connector for reception.
The connector 25 is fitted and connected to the connector section on the output device side to connect the CPU 1 to the output device. Next, the operation of the above embodiment will be described. In one of the reduced wiring terminal devices 10, a plurality of parallel signals input from the external input device to the link terminal 7 with a built-in connector for transmission are output from the parallel terminals.
The signal is converted into a serial signal by the serial converter 28 and enters the receiving connector built-in type link terminal 8 via the signal line 11, and is converted into a parallel signal by the parallel / serial converter 28 and taken into the input unit 2. The CPU 1 outputs a command signal to an output device based on the signal received by the input unit 2. That is, a plurality of parallel signals output from the output unit 3 are converted into serial signals by the parallel / serial converter 28, and enter the receiving connector built-in type link terminal 8 via the signal line 11, and receive the parallel / serial signals. The signal is converted into a parallel signal by the serial converter 28 and taken into the output device. The link terminals 7 and 8 with built-in connectors are provided with terminal function changeover switches 38.
This terminal function switch 38 is connected to the fifteenth connection terminal C.
By switching to (15), input / output unit 2,
3 selects 16 I / O points, and switches the terminal function changeover switch 38 to the error-shared contact terminal B (15 / ERR).
15 points + ERR can be selected. Therefore, the link terminal with built-in connector has 16 I / O points.
The point type and the number of I / O points of 15 points + the ERR type are required, but only one type of link terminal with a built-in connector is required. As described above, the present invention converts a parallel signal to a serial signal and converts a serial signal to a parallel signal by combining a connector with a connector to form a built-in connector. A link terminal is constructed, and the signal connection terminal on the serial signal side of the connector built-in type link terminal is connected by one signal line, and the + and-power supply connection terminals are connected by two power lines. A wiring-saving terminal device is configured, and one of the n-th connection terminal and the error terminal among the plurality of connection terminals on the parallel signal side of the parallel-serial converter is used as the n-th connection terminal of the connector. A terminal function switch for switching connection is provided, so the link terminal has a built-in connector, so wiring is reduced with the input and output units. The connection with the terminal device can be performed by connector connection, and the number of steps can be reduced. Further, according to the present invention, in a connector built-in type link terminal, a terminal function can be switched to, for example, either I / O 15 or ERR by a terminal function changeover switch, so that one unit has 16 I / O points. Either the number of points or the number of I / O points 15 points + ERR can be selected.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration explanatory diagram of an electronic device according to the present invention. FIG. 2 is a partially omitted plan view of a connector built-in type link terminal. FIG. 3 is a sectional view of the same. FIG. 4 is a side view showing the connection between the board and the connector in the connector built-in type link terminal. FIG. 5 is a plan view showing the connection between the board and the connector in the connector built-in type link terminal. FIG. 6 is a configuration explanatory view showing a connection state between an output unit and a built-in connector type link terminal. FIG. 7 is an explanatory diagram of an internal circuit configuration of a connector built-in type link terminal. FIG. 8 is a diagram illustrating the configuration of a conventional electronic device. [Description of Signs] 1 CPU 2 Input unit 3 Output unit 7 Link terminal with built-in connector 8 Link terminal with built-in connector 10 Reduced wiring terminal device 11 Signal line 12 Power supply line 13 Power supply line 15 Reduced wiring terminal device 25 Connector 28 Parallel serial converter

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G05B 19/04-19/05

Claims (1)

(57) [Claim 1] A link terminal with a built-in connector is configured by combining a connector with a parallel / serial converter that converts a parallel signal into a serial signal and converts a serial signal into a parallel signal. The signal connection terminal on the serial signal side of the connector built-in type link terminal is connected by one signal line, and the +/- power supply connection terminals are connected by two power lines to save wiring terminal equipment. And a terminal for switching and connecting one of the n-th connection terminal and the error terminal among the plurality of connection terminals on the parallel signal side of the parallel-serial converter to the n-th connection terminal of the connector. An electronic device comprising a function changeover switch.