JPS61120496A - Output terminal device for electronic apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field This invention relates to an output terminal device for electronic equipment such as a sequence controller, which has a relatively large number of input/output points and input/output channels.

(b1 Summary of the Invention This invention connects the main body of an electronic device and a terminal section with a serial data transmission cable such as an optical fiber, and provides a controller in the terminal section for controlling parallel distribution of serial data for each output south. An arbitrary number of terminal blocks can be detachably attached to the controller, and an output relay and a terminal block can be detachably attached to the terminal block.

(C1 Prior Art and Its Disadvantages) In a sequencer, which is a typical example of an electronic device with a large number of input/output points and a large number of human output channels, conventionally, the sequencer main body 1 is equipped with a basic number of input/output points as well as a CPU, as shown in Fig. 5. One basic unit 2 and a plurality of expansion units 3 for increasing the number of input/output points are housed, and terminal groups 4 are arranged to be connected by wiring from the basic unit 2 and each expansion unit 3 to each input/output fish. In the illustrated example, the basic unit 2 has 16 input points and 8 output points, the extension unit 3 has 16 input points and 8 output points, and a total of 8 extension units are arranged, and there are also 8 extension units with 8 output points in total. Also, as terminal group 4, 60P (
Five terminal blocks each having 60 terminals are arranged so that the total number of terminals is 300. but,
In the above configuration, the number of wiring lines connecting the terminal group 4 and each unit on the back side of the panel of the main unit 1 becomes extremely large, making the wiring work complicated and making it difficult to add new input/output floors. There was also the disadvantage that the work was very cumbersome at times. In addition, the main body 1 is also very large, and the wiring lines on the back side of the panel are long, making it extremely susceptible to noise.

(d1 Purpose of the Invention The purpose of this invention is to eliminate the above-mentioned drawbacks, and to use a serial data transmission cable such as an optical fiber in the terminal part, and to block the terminal part, thereby making it compact and significantly improving workability. An object of the present invention is to provide an improved output terminal device for electronic equipment.

(e) Structure of the invention This invention is constructed as follows.

The main body of the electronic device and the controller are connected by a cable such as an optical fiber. The cable serially transmits output data for each output fish from the electronic device itself. The controller distributes the serial data on the cable in parallel for each output fish.

A board is coupled to the controller. A plurality of wiring lines are formed on this board to send data distributed to each output point by the controller to the terminal side.

The substrate is supported by a base.

An arbitrary number of terminal blocks are removably mounted on the board. The terminal block is equipped with a contact that connects to any one of a plurality of wiring lines on the board via a relay drive circuit. A terminal block is detachably attached to the terminal processor.

(First Embodiment FIG. 1 is an exploded perspective view of an output terminal device of a sequencer according to an embodiment of the present invention.

In the figure, 10 is a controller. One end of an optical fiber cable 12 is connected to this controller 10 via an optical fiber connector 1). The other end of the optical fiber cable 12 is connected to a sequencer main body (not shown).

The optical fiber cable 12 includes an optical fiber and two power supply lines (not shown), and the power supply lines supply power to the controller 10 and a board to be described later.

The optical fiber constitutes a transmission path for serially receiving and passing data between the sequencer main body and the controller 10. Note that it is also possible to configure a transmission path using a twisted pair cable using electrical signals instead of optical signals. The controller 10 converts the data on the optical fiber into normal data for each output fish and puts it on the wiring line on the board, which will be described later. The controller 10 has a function of converting serially input data from an optical fiber into parallel data for each output fish.

One end of a substrate 13 is fixed to the controller 10. On the substrate 13, one common terminal 14 is formed to protrude rearward, and a plurality of wiring lines 15, which are equal in number to the number of outputs that can be handled by the controller 10, run in parallel. In front of the common terminal 14, terminals 16 whose number is equal to the number of outputs are formed protrudingly. The terminals 16 are arranged in parallel at regular intervals. Furthermore, an IC 17 that integrates a plurality of relay drive circuits is mounted on the substrate 14. r
The pin on the rear side of ci7 serves as a relay drive signal pin, and is connected to the terminal 16 by a wiring pattern. Also I
The bin in front of C17 is connected as an output bin to the corresponding wiring line 15 on the output floor. Furthermore, a power line for supplying power from the controller 10 is connected to each rc17.

The substrate 13 is supported by an aluminum base. The bottom of the base 18 has a DIN standard structure and can engage with a DIN rail.

An arbitrary number of terminal blocks 19 are mounted on the substrate 13 so that they can be freely deposited. Two relay drive contacts 20 and a relay output contact 27 are embedded inside this terminal block 19. This contact 20.27
The lower receiving end of the contactor 20 can contact the common terminal 14 and the terminal 16 on the board 13, and the upper receiving end can contact the relay terminal described later. Can be contacted with the terminal. In the receiving end portion of the other contact 27, the right receiving end portion can come into contact with a terminal of a terminal block to be described later, and the left receiving end portion can make contact with a relay output terminal. The terminal block 19 has engaging portions 19b and 19a at its front end and rear end that engage with the board 13, respectively, and can freely slide in left and right horizontal directions along the side edges of the board 13, respectively. can. When the terminal block 19 is slid horizontally along the board 13, the lower receiving end of the contactor 20 slides on the common terminal 14 and the terminal 16, and the terminal block 1
When the terminal 9 is stopped at the position of the terminal 16, the terminal 16 and the receiving end come into contact with each other.

At the rear of the terminal block 19, a relay engagement piece 24 for attaching a relay is formed to protrude upward. relay 5
0 in this position and push the relay terminals downward through the terminal holes 28 so as to contact each of the contacts 20. The relay can be fixed by engagement. Note that as the relay 50, it is possible to use a solid state relay or the like in addition to an electromagnetic relay. Further, a groove 23 is formed in the front part of the upper surface of the terminal block 19, and a terminal hole 29, a step part 30, and an engaging protrusion 31 are formed in the front part. A mark sheet (not shown) representing the output floor of the terminal block is inserted into the groove 23. The terminal hole 29 is a hole for inserting a terminal of a terminal block to be described later. The step portion 30 is for placing a terminal block to be described later, and the engaging protrusion 31 is for fixing the terminal block placed on the step portion 30. Both left and right end surfaces of the terminal block 19 are planar, so that when a plurality of blocks are put together, they are in close contact with each other.

The terminal connector 40 includes a plurality of frame portions 41 in two upper and lower stages, and upper and lower terminals 42 internally connected to each frame portion.

The frame portion 41 can be inserted into the terminal hole 29 of the terminal block 19. When inserted, the frame portion 41 is connected to the contact 27
makes contact with the receiving end of the The terminal block 40 is fixed by engaging the groove 43 formed on the bottom surface of the terminal block with the engaging protrusion 31 while placed on the stepped portion 30 of the terminal block 19 .

FIG. 2 is a front view of the output terminal device when terminal blocks 19 equal to the number of outputs that can be handled by the controller 10 are attached. 60 is an end plate. This end plate 60 is fixed by passing a screw hole into a screw portion 44 formed on the side end surface of the base 18 and screwing it. The end plate 60 is fixed to the base 18 after all the necessary terminal blocks 19 have been installed, and has the role of preventing the terminal blocks 19 from coming off to the horizontal support.

FIG. 3 shows a sectional view of the terminal device. In the figure, 45 is a rail engaging member for engaging with the DIN rail. Terminal block 19 as shown
The receiving ends formed at both ends of the two contacts 20 are connected to the terminals 14, 16, ., on the substrate 13, respectively. The relay is touching the terminal. The receiving ends formed at both ends of the other two contacts 27 are in contact with the output terminal of the relay 50 and the column part 41 of the terminal block 40, respectively.

As a result, the output signal of the IC 17 is inputted from the terminal 14° 16 to the relay 50 via the contactor 20, and the output of the relay is further inputted to the terminal 4 of the terminal block 40 via the contactor 27.
2. In addition, in the controller 10, the serial data on the optical fiber is parallelized for each output point and placed on the wiring line 15 corresponding to each output floor, and each relay drive circuit in the IC 17 operates the relay based on the signal on the respective wiring line. Form a drive signal. As a result, if the number of outputs that can be handled by the controller 10 is 16, for example, 16 points of output data can be transmitted from the sequencer main body to the controller 10 using one cable.

FIG. 4 shows a front view of a sequencer using eight output terminal devices shown above and eight input terminal devices having a similar configuration. Note that each terminal device has 16 input points and 16 output points. In the figure, reference numeral 5 denotes a transmission module section connected to the basic unit, and one optical fiber cable is provided from this transmission module section 5 to each output terminal device. A total of 16 optical fiber cables are required. 6 indicates a fiber duct. As is clear from a comparison with FIG. 5, in this example, the number of input and output points is extremely large (maximum 128) (although it is possible to do so, the overall size is extremely small.
This is because there is no need to provide an additional unit compared to the conventional device shown in the figure. In addition, the number of cables routed behind the panel is only 16, and data is transmitted using optical fibers (or twisted pair wires), which makes wiring work extremely easy and eliminates noise. However, it can be made extremely strong.

(g) Effects of the Invention As described above, according to the present invention, the entire electronic device can be downsized, and the number of lines connecting each terminal device and the main body of the electronic device can be reduced, resulting in improved noise resistance. There are significant improvements to be made. Further, the wiring work is extremely simple, which has the effect of improving workability. Furthermore, since the entire terminal device is divided into blocks, and the terminal blocks can be attached to each output point, even if one terminal block becomes defective, it can be replaced very easily. Similarly, even if the terminal block, relay, or board becomes defective, there is an advantage that it is extremely easy to replace them.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of an output terminal device for a sequencer according to an embodiment of the present invention. 2 is a front view of the output terminal device after assembly, FIG. 3 is a sectional view of FIG. 2, and FIG. 4 is a front view of an example of a sequencer using the terminal device of the present invention. Further, FIG. 5 is a front view of an example of a conventional sequencer. 10-controller, 12-optical fiber cable, 13
1 board, 14-common terminal on the board, 15-wiring line, 16-terminal on the board, 17-IC1) 8-base, 19-terminal block/20.27-contact, 40-1 terminal block, 50 -Relay.

Claims (4)

[Claims] (1) Output No. Connected to a cable that serially transmits output data for each
．． a controller coupled to the controller and distributing output no. a board on which a plurality of wiring lines are formed to send data distributed to the terminal side; a base that supports the board; and an arbitrary number of relays that are detachably attached to the board and connected to any of the plurality of wiring lines. An electronic device comprising: a terminal block having a contact element connected via a drive circuit; an output relay detachably attached to the terminal block; and a terminal block detachably attached to the terminal block. Output terminal device. (2) An output terminal device for an electronic device according to claim 1, wherein the cable is an optical fiber. (3) An output terminal device for an electronic device according to claim 1, wherein the cable is formed of a twisted pair wire. (4) The output terminal device for an electronic device according to any one of claims 1 to 3, wherein the base has a rail attachment frame.